Employees at CIA headquarters are aware that Flight 93 is unaccounted for, and assume their building is its intended target. This is according to CIA contractor Billy Waugh, who is currently doing some work for the agency and is at its Langley headquarters at the time of the attacks. In a 2004 book, Waugh will describe: “We had witnessed the hits on the World Trade Center and knew the hijacked United Airlines Flight 93 remained unaccounted for. It was a widespread assumption within the building that this flight was headed straight for us in the CIA headquarters.” [Waugh and Keown, 2004, pp. 293-294] At around 10:00 a.m., much of CIA headquarters is evacuated, following reports of unresponsive aircraft possibly heading toward Washington (see (9:50 a.m.-10:00 a.m.) September 11, 2001). [Tenet, 2007, pp. 164] Waugh recalls, “There was no panic, just an understanding that those in my division needed to walk to the west parking lot, away from the buildings, and await the inevitable impact.” He adds that, “Upon hearing that Flight 93 had gone down in a Pennsylvania field, a couple of us returned to the HQ building to pick up any necessary gear.” [Waugh and Keown, 2004, pp. 294] The 9/11 Commission will state that Flight 93’s intended target is either the Capitol building or the White House, not CIA headquarters. [9/11 Commission, 7/24/2004, pp. 14] However, in 2006 MSNBC will note, “to this day, the ultimate target of the terrorists on this aircraft has never been confirmed.” [MSNBC, 9/12/2006]

Numerous witnesses, including firefighters and other rescue workers, hear explosions at the start of, and during, the collapse of the south WTC tower. Some of them report hearing a single explosion:
Jeff Birnbaum: “There was an explosion and the whole top leaned toward us and started coming down.” [Electrical Wholesaling, 2/1/2002]
Battalion Chief John Sudnik: “[W]e heard a loud explosion or what sounded like a loud explosion and looked up and I saw Tower Two start coming down.” [City of New York, 11/7/2001]
Firefighter Edward Kennedy hears “a tremendous boom, explosion… and the top of the building was coming down at us.” [City of New York, 1/17/2002]
Firefighter Edward Sheehey hears “an explosion, looked up, and the building started to collapse.” [City of New York, 12/4/2001]
Battalion Chief Thomas Vallebuona: “I heard ‘boom,’ an exploding sound, a real loud bang. I looked up, and I could see the Trade Center starting to come down.” [City of New York, 1/2/2002]
EMT Julio Marrero: “I heard a loud bang. We looked up, and we just saw the building starting to collapse.” [City of New York, 10/25/2001]
Other witnesses report hearing multiple explosions:
Journalist Pete Hamill: “We heard snapping sounds, pops, little explosions, and then the walls bulged out, and we heard a sound like an avalanche.” [New York Daily News, 9/11/2001]
Police officer Sue Keane, who is an Army veteran, is located in the north WTC tower: “[I]t sounded like bombs going off. That’s when the explosions happened.… It started to get dark, then all of a sudden there was this massive explosion.” [Hagen and Carouba, 2002, pp. 65]
Firefighter Keith Murphy, who is in the lobby of the North Tower: “[T]he first thing that happened, which I still think is strange to me, the lights went out.… I had heard right before the lights went out, I had heard a distant boom boom boom, sounded like three explosions.… At the time, I would have said they sounded like bombs, but it was boom boom boom and then the lights all go out.… I would say about 3, 4 seconds, all of a sudden this tremendous roar.” [City of New York, 12/5/2001]
Firefighter Craig Carlsen hears “explosions coming from building two, the South Tower. It seemed like it took forever, but there were about ten explosions.… We then realized the building started to come down.” [City of New York, 1/25/2002]
Firefighter Thomas Turilli, who is in the lobby of the North Tower: “[A]ll of a sudden you just heard like it almost actually that day sounded like bombs going off, like boom, boom, boom, like seven or eight, and then just a huge wind gust just came… It just seemed like a huge explosion.” [City of New York, 1/17/2002]
Firefighter Stephen Viola: “[T]hat’s when the South Tower collapsed, and it sounded like a bunch of explosions. You heard like loud booms.” [City of New York, 1/10/2002]
Firefighter Lance Lizzul: “[W]e heard some bangs. That made us look up, and that’s when the first Trade Center came down.” [City of New York, 12/10/2001]
Paramedic Kevin Darnowski: “I heard three explosions, and then we heard like groaning and grinding, and Tower Two started to come down.” [City of New York, 11/9/2001]
However, the National Institute of Standards and Technology, which conducts a three-year study of the WTC collapses, will subsequently claim it found “no corroborating evidence for alternative hypotheses suggesting that the WTC towers were brought down by controlled demolition using explosives” (see October 26, 2005). [National Institute of Standards and Technology, 9/2005, pp. 146]

According to Lyz Glick, as recounted in the book “Among the Heroes,” she is speaking to her husband Jeremy Glick on Flight 93 when he tells her that passengers have been hearing from other phone calls that planes are crashing into the World Trade Center. He asks her, “Are [the hijackers] going to blow this plane up?” Lyz replies that she doesn’t know, but tells him that it is true two planes have crashed into the World Trade Center. He asks her if they’re going to crash the plane into the World Trade Center. She replies, “No. They’re not going there.” He asks why, and she replies that one of the towers has just fallen. “They knocked it down.” The first World Trade Center tower collapses at 9:59 and is seen by millions on television. The book makes clear that this exchange takes place at “almost ten o’clock” —within a minute of the tower collapse. [Longman, 2002, pp. 147] This account contradicts the 9/11 Commission’s conclusion that the passenger assault on the cockpit begins at 9:58, because the tower collapse was definitely at 9:59. Only later in the same phone call does Jeremy Glick mention that passengers are still taking a vote on whether or not to attack the hijackers. He confers with others and tells Lyz that they’ve decided to do so, and then gets off the phone line. [Longman, 2002, pp. 153-54]

Deputy Fire Commissioner Thomas Fitzpatrick. [Source: City of New York]Numerous witnesses to the collapse of the south WTC tower think it resembles a demolition using explosives. Some initially believe this is what is occurring:
Reporter John Bussey watches the collapse from the Wall Street Journal’s offices across the street from the WTC. He says, “I… looked up out of the office window to see what seemed like perfectly synchronized explosions coming from each floor, spewing glass and metal outward. One after the other, from top to bottom, with a fraction of a second between, the floors blew to pieces.” [Wall Street Journal, 9/12/2001]
Deputy Fire Commissioner Thomas Fitzpatrick: “I remember seeing, it looked like sparkling around one specific layer of the building.… Then the building started to come down. My initial reaction was that this was exactly the way it looks when they show you those implosions on TV.” [City of New York, 10/1/2001]
Assistant Fire Commissioner Stephen Gregory: “I saw low-level flashes. In my conversation with Lieutenant Evangelista… he questioned me and asked me if I saw low-level flashes in front of the building, and I agreed with him… I saw a flash flash flash and then it looked like the building came down.… You know like when they demolish a building, how when they blow up a building, when it falls down? That’s what I thought I saw.” [City of New York, 10/3/2001]
Firefighter Richard Banaciski: “It seemed like on television they blow up these buildings. It seemed like it was going all the way around like a belt, all these explosions.” [City of New York, 12/6/2001]
Firefighter Joseph Meola: “As we are looking up at the building, what I saw was, it looked like the building was blowing out on all four sides. We actually heard the pops.… You thought it was just blowing out.” [City of New York, 12/11/2001]
Fire Chief Frank Cruthers: “[T]here was what appeared to be at first an explosion. It appeared at the very top, simultaneously from all four sides, materials shot out horizontally. And then there seemed to be a momentary delay before you could see the beginning of the collapse.” [City of New York, 10/31/2001]
Battalion Chief Brian Dixon: “I was watching the fire… the lowest floor of fire in the South Tower actually looked like someone had planted explosives around it because the whole bottom I could see—I could see two sides of it and the other side—it just looked like that floor blew out.… I thought, geez, this looks like an explosion up there, it blew out.” [City of New York, 10/25/2001]
Firefighter Timothy Burke: “Then the building popped, lower than the fire… I was going oh, my god, there is secondary device because the way the building popped I thought it was an explosion.” [City of New York, 1/22/2002]
Firefighter Edward Cachia: “It actually gave at a lower floor, not the floor where the plane hit, because we originally had thought there was like an internal detonation explosives because it went in succession, boom, boom, boom, boom, and then the tower came down.” [City of New York, 12/6/2001]
Firefighter Kenneth Rogers: “[T]here was an explosion in the South Tower… I kept watching. Floor after floor after floor. One floor under another after another and when it hit about the fifth floor, I figured it was a bomb, because it looked like a synchronized deliberate kind of thing.” [City of New York, 12/10/2001]
Reporter Beth Fertig: “The tower went down perfectly straight, as if a demolition crew had imploded it. I wondered if it was being brought down deliberately.” [Gilbert et al., 2002, pp. 78]
Paramedic Daniel Rivera: “[D]o you ever see professional demolition where they set the charges on certain floors and then you hear ‘Pop, pop, pop, pop, pop’? That’s exactly what—because I thought it was that.” [City of New York, 10/10/2001]
Battalion Chief Dominick DeRubbio: “It was weird how it started to come down. It looked like it was a timed explosion.” [City of New York, 10/12/2001]
The Guardian will report that police on the scene said the collapse “looked almost like a ‘planned implosion’ designed to catch bystanders watching from the street.” [Guardian, 9/12/2001]
However, the National Institute of Standards and Technology, which conducts a three-year study of the WTC collapses, will reject suggestions that the WTC towers were brought down with explosives (see August 30, 2006). CTV will assert, “[F]lashes of light that seemed to indicate bombs detonating were not explosions. They were pockets of airs being forced out of windows as the sagging floors pushed downward.” [CTV, 9/12/2006]

Dick Cheney and senior staff witness the collapse of the WTC South Tower. Directly behind Cheney are Norman Mineta and I. Lewis ‘Scooter’ Libby. National Security Advisor Condoleezza Rice stands behind Cheney’s left shoulder. [Source: David Bohrer / White House]In the conference room of the Presidential Emergency Operations Center (PEOC), Vice President Cheney, National Security Adviser Condoleezza Rice, and their aides watch the South Tower collapsing on television. [Newsweek, 12/31/2001] Cheney will later say that the WTC coming down “was a shock to everybody—it certainly was to me.” [PBS, 9/9/2002] However, if he is indeed shocked, this is not how Cheney appears to others in the room. One witness who is present will later recall that, as the South Tower collapses, there is “a groan in the room that I won’t forget, ever. It seemed like one groan from everyone.” However, Cheney makes no sound, but closes his eyes for a long, slow blink. The witness says, “I remember turning my head and looking at the vice president, and his expression never changed.” [Washington Post, 6/24/2007] According to Mary Matalin, a counselor to the vice president, Cheney says nothing in response to the collapse, but “he emoted in a way that he emotes, which was to stop.” [CNN, 9/11/2002; CNN, 9/11/2002] When he is told that a casualty estimate ranges well into the thousands, the vice president reportedly just nods grimly. [Newsweek, 12/31/2001] According to the Washington Post, three people who are present say they see no sign now or later “of the profound psychological transformation that has often been imputed to Cheney.” What they see is “extraordinary self-containment and a rapid shift of focus to the machinery of power. While others assessed casualties and the work of ‘first responders,’ Cheney began planning for a conflict that would call upon lawyers as often as soldiers and spies.” He will promptly begin assembling the legal team that subsequently assists him in expanding presidential power (see (After 10:00 a.m.) September 11, 2001). [Washington Post, 6/24/2007]

Counterterrorism “tsar” Richard Clarke is told in private by Dale Watson, the head of the FBI’s Counterterrorism Division: “We got the passenger manifests from the airlines. We recognize some names, Dick. They’re al-Qaeda.” Clarke asks, “How the f_ck did they get on board then?” Watson replies: “Hey, don’t shoot the messenger, friend. CIA forgot to tell us about them.” As they are talking about this, they see the first WTC tower collapse on television. [Clarke, 2004, pp. 13-14] Some hijacker names, including Mohamed Atta’s, were identified on a reservations computer over an hour earlier (see (Shortly After 8:32 a.m.) September 11, 2001).

Members of Congress who are assembled at the headquarters of the Capitol Police in Washington, DC receive regular briefings from police officers, but these reveal little more than what is being reported in the news. [Washington Post, 9/12/2001] After being evacuated from the Capitol building, many members of Congress go to the Capitol Police headquarters, located a block and a half away (see (9:55 a.m. and After) September 11, 2001). [Daschle and D'Orso, 2003, pp. 110-112] Throughout the day, several hundred of them go there, though some Congressional leaders are moved to a secure bunker outside Washington around late morning or early afternoon (see (Between Late Morning and Early Afternoon) September 11, 2001). [Washington Post, 1/27/2002; CNN, 9/11/2002] According to Senate Majority Leader Tom Daschle (D-SD), the police headquarters becomes “Congress’s central command center for the rest of the day.” [Daschle and D'Orso, 2003, pp. 112] But, CNN will report, “In a place where power means knowing things, nobody knew very much.” Deputy Chief James Rohan of the Capitol Police later describes, “There was somebody [at the headquarters] had brought out a little four inch black and white TV with just an antenna stick on it, plugged it in, and they were getting all their information from the networks from this tiny little TV.” [CNN, 9/11/2002] The Senate and House members at the headquarters receive hourly briefings from Capitol Police officers. But, according to the Washington Post, “lawmakers privately described the sessions as ‘rudimentary,’ offering few details beyond published reports.” [Washington Post, 9/12/2001] According to Daschle, who is among those moved to the secure bunker outside Washington, members of Congress who remain at the police headquarters spend the day “crammed into several conference rooms and offices, working the telephones and watching the TV monitors for developing news,” though he gives no specific details of what they do. [Daschle and D'Orso, 2003, pp. 112] Late in the afternoon, about 50 of them speak by phone with the Congressional leaders at the secure bunker (see (5:00 p.m.) September 11, 2001), and during the evening, many of them will join the leaders on the steps of the Capitol building for a press conference (see 7:24 p.m. September 11, 2001).

According to the 9/11 Commission, the hijacker pilot of Flight 93, presumably Ziad Jarrah, has been rolling the plane sharply to the left and right in an attempt to prevent passengers from reaching the cockpit. At this time, he stabilizes the plane and asks another hijacker, “Is that it? Shall we finish it off?” Another voice answers, “No. Not yet. When they all come, we finish it off.” The pilot starts pitching the nose of the airplane up and down. A few seconds later a passenger’s voice can be heard saying, “In the cockpit. If we don’t we’ll die!” Another voice says, “Roll it!” which some speculate could be a reference to pushing a foot cart into the cockpit door. By 10:01, the pilot stops the pitching and says, “Allah o akbar! Allah o akbar!” (“God is great”), then asks, “Is that it? I mean, shall we put it down?” Another hijacker responds, “Yes, put it in it, and pull it down.” [New York Times, 7/22/2004; San Francisco Chronicle, 7/23/2004]

A security officer for one of the businesses in Building 7 of the World Trade Center (WTC 7) goes up WTC 7 and subsequently becomes trapped on its seventh floor. [National Institute of Standards and Technology, 9/2005, pp. 109-110; National Institute of Standards and Technology, 11/2008, pp. 298-299 ] Although most people were evacuated from the building around the time the South Tower was hit, if not earlier (see (9:03 a.m.) September 11, 2001), after the South Tower collapses at 9:59 a.m. the security officer heads up to a floor in the 40s in WTC 7, reportedly to check that all his personnel have left. (The name of the company he works for is unstated.) He is initially accompanied by a police officer, but at around the 10th floor this officer has difficulty breathing, and so goes back down and exits the building. When the North Tower collapses at 10:28 a.m., WTC 7 shakes and the stairwell goes dark. The security officer, who has reached the 30th floor by this time, heads back down the stairs. When he reaches the 23rd floor, where the headquarters of New York’s Office of Emergency Management (OEM) is located, he opens the door to check for any members of staff that might still be there, but finds the area filled with smoke. (The OEM was evacuated at about 9:30 a.m., if not earlier (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (9:30 a.m.) September 11, 2001).) He then continues down to the seventh floor, where he has to stop because he is unable to see or breathe. He is able to break a window, and calls for help. [National Institute of Standards and Technology, 11/2008, pp. 298-299 ] At around 12:10 to 12:15 p.m., firefighters will enter the building and rescue the security officer, escorting him down the stairs and out of the building. They will also rescue two men who are trapped on the eighth floor (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 6/2004 ; National Institute of Standards and Technology, 9/2005, pp. 110]

Dick Cheney talking to Condoleezza Rice. [Source: David Bohrer / White House] (click image to enlarge)According to the 9/11 Commission, Vice President Dick Cheney is told that the Air Force is trying to establish a combat air patrol (CAP) over Washington. Cheney, who is in the Presidential Emergency Operations Center (PEOC) below the White House, then calls President Bush on Air Force One to discuss the rules of engagement for this CAP. Cheney later tells the 9/11 Commission that he’d felt “it did no good to establish the CAP unless the pilots had instructions on whether they were authorized to shoot if the plane would not divert.” He recalls that “the president signed off on that concept.” Bush will recall this phone call and emphasize to the 9/11 Commission that, during it, he had authorized the shootdown of hijacked aircraft. National Security Adviser Condoleezza Rice, who is in the PEOC with Cheney, will tell the Commission she recalls hearing Cheney inform the president: “Sir, the CAPs are up. Sir, they’re going to want to know what to do.” Then she hears Cheney say, “Yes sir.” However, as the Commission will later note, “Among the sources that reflect other important events that morning there is no documentary evidence for this call, although the relevant sources are incomplete” (see (Mid 2004)). [9/11 Commission, 7/24/2004, pp. 40-41] Reportedly, some members of the Commission’s staff will not believe this call between Bush and Cheney ever took place. [Newsweek, 6/20/2004] Cheney phones Bush at 10:18 (see 10:18 a.m.-10:20 a.m. September 11, 2001). According to the 9/11 Commission, it is in fact during that call that Bush authorizes the military to shoot down threatening aircraft. [9/11 Commission, 7/24/2004, pp. 41]

Defense Secretary Donald Rumsfeld returns from the Pentagon crash site “by shortly before or after 10:00 a.m.” Then he has “one or more calls in my office, one of which was with the president,” according to his testimony before the 9/11 Commission. [9/11 Commission, 3/23/2004] The commission later concludes that Rumsfeld’s call with President Bush has little impact: “No one can recall any content beyond a general request to alert forces.” The possibility of shooting down hijacked planes is not mentioned. [9/11 Commission, 6/17/2004] Rumsfeld then goes to the Executive Support Center (ESC) located near his office, arriving there at around 10:15 a.m. In the ESC already are Stephen Cambone, Rumsfeld’s closest aide, Larry Di Rita, Rumsfeld’s personal chief of staff, and Victoria Clarke, the assistant secretary of defense for public affairs. Rumsfeld had instructed Di Rita and Clarke to go to the ESC and wait for him there when they’d come to his office soon after the second WTC tower was hit at 9:03 A.M. (see (Shortly After 9:03 a.m.) September 11, 2001). Presently, Rumsfeld gives them their first confirmation that a plane hit the Pentagon, saying, “I’m quite sure it was a plane and I’m pretty sure it’s a large plane.” According to Clarke, he pulls out a yellow legal pad and writes down three categories, “by which his thinking would be organized the rest of the day: what we needed to do immediately, what would have to be underway quickly, and what the military response would be.” [Clarke, 2006, pp. 221-222; Cockburn, 2007, pp. 5-6] The Executive Support Center has secure video facilities, and while there, Rumsfeld participates in the White House video teleconference. This is the video conference that counterterrorism “tsar” Richard Clarke claims Rumsfeld is a part of much of the morning (see (9:10 a.m.) September 11, 2001). Then at around 10:30 a.m., he moves on to the National Military Command Center NMCC, located next door to the ESC (see (10:30 a.m.) September 11, 2001). [Washington Times, 2/23/2004; 9/11 Commission, 6/17/2004; 9/11 Commission, 7/24/2004, pp. 43-44] Those in the NMCC are apparently unaware of Rumsfeld’s whereabouts during the half-hour from 10 a.m. to 10:30 a.m.: Brigadier General Montague Winfield later recalls, “For 30 minutes we couldn’t find him. And just as we began to worry, he walked into the door of the [NMCC].” [ABC News, 9/11/2002]

Ian Sanderson. [Source: Rome Sentinel]Major Kevin Nasypany, the mission crew commander at NORAD’s Northeast Air Defense Sector (NEADS), complains about Lieutenant Colonel Ian Sanderson—an officer from the NEADS battle cab—spending time on the operations floor, where, Nasypany says, he has been “circumventing my system.” [North American Aerospace Defense Command, 9/11/2001] Sanderson is the NEADS Sector Operations Control Center (SOCC) director. He is also beginning his training as a fighter director on this day. [9/11 Commission, 10/29/2003 ] He is one of a number of senior personnel working in the battle cab, which is a glass-walled room overlooking the NEADS operations floor. [Filson, 2003, pp. 55; 9/11 Commission, 10/30/2003 ] However, he has also been spending time on the operations floor.
Director Is 'Circumventing My System' - Nasypany therefore now complains, “Got to get Ian [Sanderson] off the floor.” He adds that Sanderson has been “on it, circumventing my system here.” [North American Aerospace Defense Command, 9/11/2001] (As the mission crew commander (MCC), Nasypany is supposed to be in charge of the entire operations floor. [Spencer, 2008, pp. 25] ) He continues with his complaint, saying that Sanderson is “not an MCC” and so he “needs to stay up there” in the battle cab. [North American Aerospace Defense Command, 9/11/2001]
Director Says He 'Did Not Interfere' - Despite Nasypany’s grievance that he has been “circumventing my system,” Sanderson will tell the 9/11 Commission that his “first inclination” after the first World Trade Center tower was hit had been to “step back and let everyone do their jobs.” He will say that in “wartime”—presumably referring to situations like the present crisis—“there really is no function for the SOCC director.” His role on this day is therefore, partly, “to stay out of everyone’s way.” Sanderson will also say he is “parental” to the NEADS personnel, and, in contrast with Nasypany’s complaint about him, will say he “did not interfere.”
Director Responsible for Recalling Off-Duty Personnel - The SOCC director, according to Sanderson, serves as “an internal look at the operations on the SOCC [operations] floor,” and “involves manning and procedures of floor operations.” On this day, Sanderson is responsible for ensuring that the operations floor has additional personnel, and for coordinating fighter jets from bases that are not NORAD assets. Sanderson will say he is “primarily concerned with calling back the operations personnel” who are off duty. [9/11 Commission, 10/29/2003 ]

Counterterrorist Center logo. [Source: CIA]At around 10 a.m., following reports that several aircraft were not responding to communications and could be heading toward Washington, CIA Director George Tenet orders the evacuation of the CIA headquarters building in Langley, Virginia (see (9:50 a.m.-10:00 a.m.) September 11, 2001). However, Cofer Black, the director of the Counterterrorist Center (CTC), is unhappy about this and tells Tenet, “Sir, we’re going to have to exempt CTC from this because we need to have our people working the computers.” The CTC, according to the Los Angeles Times, is “the nerve center for the CIA’s effort to disrupt and deter terrorist groups and their state sponsors.” About 200 employees are currently working in it. Eight of them are in the Global Response Center on the sixth floor of the building, monitoring the latest intelligence on terrorism throughout the world. The rest are in a windowless facility low down in the building. When Tenet points out that the Global Response Center staff will be at risk, Black responds, “They have the key function to play in a crisis like this. This is exactly why we have the Global Response Center.” When Tenet points out, “They could die,” Black replies, “Well, sir, then they’re just going to have to die.” After pausing, Tenet agrees, “You’re absolutely right.” Tenet later says, “Now that we were under attack, the Counterterrorist Center, with its vast data banks and sophisticated communications systems, was more vital than ever. Even as we were discussing going or staying, CTC was sending out a global alert to our stations around the world, ordering them to go to their liaison services and agents to collect every shred of information they could lay their hands on.” [Los Angeles Times, 10/12/2001; Woodward, 2002, pp. 8-9; Tenet, 2007, pp. 164-165]

Logo of the 148th Fighter Wing. [Source: Air National Guard]Although the White House has requested a fighter escort for Air Force One (see 9:59 a.m. September 11, 2001), fighter jets that are kept on alert at Tyndall Air Force Base in Florida reportedly fail to launch in order to accompany the president’s plane after it takes off from Sarasota, Florida (see 9:54 a.m. September 11, 2001). [Filson, 2003, pp. 87; St. Petersburg Times, 7/4/2004; 9/11 Commission, 7/24/2004, pp. 38]
Fighters on 'Battle Stations' but Not Launched - The 148th Fighter Wing of the Minnesota Air National Guard has a full time active duty detachment at Tyndall Air Force Base, near Panama City. [Filson, 1999; US Air Force, 2004; GlobalSecurity (.org), 8/21/2005] This unit serves as one of NORAD’s seven “alert” sites around the US, which all have a pair of fighter jets on the runway, armed, fueled, and ready to take off within minutes if called upon. [Airman, 12/1999; Air Force Magazine, 2/2002; Bergen Record, 12/5/2003] But, according to the 1st Air Force’s book about 9/11, although NORAD’s Southeast Air Defense Sector (SEADS) puts the alert jets at Tyndall on “battle stations,” it does not launch them. The jets’ pilots sit “in their cockpits awaiting word to go, but Air Force One moved so quickly they were never scrambled.” Instead, F-16s from Ellington Field in Texas are scrambled, and escort Air Force One to Barksdale Air Force Base (see (After 9:56 a.m.) September 11, 2001 and (11:29 a.m.) September 11, 2001). [Filson, 2003, pp. 87] However, in a 2002 interview, Major General Larry Arnold, the commanding general of NORAD’s Continental US Region, will claim that after NORAD is told “just to follow the president” on Air Force One, it “scrambled available airplanes from Tyndall and then from Ellington in Houston, Texas. The Ellington F-16s chased Air Force One and landed with the president at Barksdale AFB in Louisiana.” [Code One Magazine, 1/2002]
Other Alert Fighters in Florida Not Launched - NORAD also keeps two fighters on alert at Homestead Air Reserve Base, near Miami, Florida, but it is unclear whether these are scrambled after Air Force One, and apparently they never accompany the president’s plane (see (10:00 a.m.) September 11, 2001). Philip Melanson, an expert on the Secret Service, will later comment: “I can’t imagine by what glitch the protection was not provided to Air Force One as soon as it took off. I would have thought there’d be something in place whereby one phone call from the head of the security detail would get the fighters in the air immediately.” [Filson, 2003, pp. 87; St. Petersburg Times, 7/4/2004]

Just after President Bush authorizes the military to shoot down threatening aircraft, he speaks with Secretary of Defense Donald Rumsfeld about this, according to some accounts. According to the Washington Post, Bush gave the shootdown authorization after taking off on Air Force One (see (Shortly After 9:56 a.m.) September 11, 2001). He then talks “to Rumsfeld to clarify the procedures military pilots should follow in trying to force an unresponsive plane to the ground before opening fire on it. First, pilots would seek to make radio contact with the other plane and tell the pilot to land at a specific location. If that failed, the pilots were to use visual signals. These included having the fighters fly in front of the other plane. If the plane continued heading toward what was seen as a significant target with apparently hostile intent, the US pilot would have the authority to shoot it down.” [Washington Post, 1/27/2002] Journalist and author Bill Sammon will give a similar account, saying that, having spoken with Vice President Dick Cheney soon after Air Force One took off, Bush “then explained the shootdown order to Donald Rumsfeld, who was at the still-burning Pentagon.” [Sammon, 2002, pp. 102] The 9/11 Commission will concur that the “president apparently spoke to Secretary Rumsfeld for the first time… shortly after 10:00.” However, contradicting earlier accounts, it will say, “No one can recall the content of this conversation, but it was a brief call in which the subject of shootdown authority was not discussed” (see (10:00 a.m.-10:30 a.m.) September 11, 2001). According to the Commission, furthermore, the phone call between Bush and Cheney where the president gives the shootdown authorization is not until 10:18 (see 10:18 a.m.-10:20 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 41 and 43] Bush’s senior adviser Karl Rove, who is on Air Force One with the president, will also say this critical call occurs “at about 10:20,” and add that, after it, Bush reports that he has just talked to Rumsfeld as well as Cheney. [MSNBC, 9/11/2002] Rumsfeld will indicate he first learns that shootdown authorization has been given from Cheney rather than Bush, telling the 9/11 Commission that the vice president “informed me of the president’s authorization to shoot down hostile aircraft” over the air threat conference call. [9/11 Commission, 3/23/2004] The conversation he is referring to does not occur until 10:39 a.m. (see 10:39 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 43]

Someone falling from the WTC. Well over 50 jumped or fell from the North Tower, none from the South Tower. [Source: Associated Press]At some point between the collapse of the two WTC towers, it is claimed that fire chiefs order the firefighters to come down. It has not been reported exactly who issued this order or when. Witnesses claim that scores of firefighters, unaware of the danger, were resting on lower floors in the minutes before the second tower collapsed. “Some firefighters who managed to get out said they had no idea the other building had already fallen, and said that they thought that few of those who perished knew.” At least 121 firefighters in the remaining tower die. The Fire Department blames a faulty radio repeater. However, the Port Authority claims later transcripts of radio communications show the repeaters worked. [New York Times, 11/9/2002]

Ray Downey. [Source: Unknown]When the WTC’s South Tower collapses, Father John Delendick—one of New York Fire Department’s chaplains—runs down a ramp to the garages below the nearby World Financial Center, to escape the dust cloud. He speaks there with Fire Chief Ray Downey, and asks him if the jet fuel from the plane had blown up, causing the collapse. [City of New York, 12/6/2001] Downey is in fact a renowned expert on building collapses. Robert Ingram, a battalion chief in the New York Fire Department later refers to him as “the premiere collapse expert in the country.” [US Congress. Senate. Committee on Commerce, 10/11/2001 ] 9/11 Commissioner Timothy Roemer calls Downey a “very, very respected expert on building collapse.” [9/11 Commission, 5/18/2004] And Fire Chief Mike Antonucci, who is a best friend of Downey’s, says he “was probably the most knowledgeable person on building collapses there was. That was his [hobby], to study building collapses—what affected the engineering of buildings, how they [would] weaken and how he could respond and stay safe.” [Inland Valley Daily Bulletin, 9/7/2006] In response to Delendick’s question, Downey replies that, “at that point he thought there were bombs up there because [the collapse] was too even.” [City of New York, 12/6/2001] Earlier on, Downey told other fire chiefs responding at the WTC that he was worried about “explosive devices” in the Twin Towers “that could hurt the firemen” (see (9:20 a.m.) September 11, 2001). He is killed when the North Tower collapses at 10:28 a.m. [New York Times, 9/9/2005]

United Airlines temporarily loses communication with three of its aircraft. Andrew Studdert, United Airlines’ chief operating officer, will tell the 9/11 Commission that at around 10:00 a.m., the airline loses contact with Flight 399, Flight 415, and Flight 641. Persistent attempts to communicate with these “missing” aircraft are eventually successful. [9/11 Commission, 1/27/2004] At 10:45 a.m., the FAA’s Cleveland Center will report that Flight 641 is on the ground at Detroit Metro Airport in Michigan. [Federal Aviation Administration, 9/11/2001]

Damage to World Trade Center Building 7. [Source: New York City Police Department]World Trade Center Building 7 (WTC 7) appears to have suffered significant damage at some point after the Twin Towers collapsed, according to some firefighters at the scene. Firefighter Butch Brandies tells other firefighters that nobody is to go into Building 7 because of creaking and noises coming out of there. [Firehouse Magazine, 9/9/2002] According to Deputy Chief Peter Hayden, there is a bulge in the southwest corner of the building between floors 10 and 13. [Firehouse Magazine, 9/2/2002] Battalion Chief John Norman will later recall, “At the edge of the south face you could see that it was very heavily damaged.” [Firehouse Magazine, 9/2/2002] Deputy Chief Nick Visconti also later recalls, “A big chunk of the lower floors had been taken out on the Vesey Street side.” [Firehouse Magazine, 9/9/2002] Captain Chris Boyle will recall, “On the south side of 7 there had to be a hole 20 stories tall in the building, with fire on several floors.” [Firehouse Magazine, 9/9/2002] The building will collapse hours later (see (5:20 p.m.) September 11, 2001).

A Maryland State Police helicopter. [Source: Maryland State Police]Sergeant Ronald Galey, the pilot of a US Park Police helicopter responding to the attack on the Pentagon, asks the Maryland State Police to send medical evacuation (medevac) helicopters to help out at the crash scene, but is told, “No, we can’t respond,” apparently because the airspace has been shut down. [Rotor and Wing, 11/2001; US Naval Historical Center, 11/20/2001] Galey is flying one of the two Park Police Aviation Unit helicopters that arrived at the Pentagon within minutes of the attack there (see Shortly After 9:37 a.m. September 11, 2001). His helicopter has been circling overhead while the other Park Police helicopter landed to conduct medical evacuations. They are currently the only helicopters to have arrived on the scene.
Pilot Wants More Helicopters to Assist at the Pentagon - Realizing that his helicopter cannot provide its current command and control function and conduct medical evacuations at the same time, Galey requests assistance from other departments that have helicopters equipped to transport injured patients. The first department he calls is the Maryland State Police. [US Naval Historical Center, 11/20/2001; McDonnell, 2004, pp. 20-22 ] The Maryland State Police Aviation Command owns 12 helicopters and most of its work involves medical transport, with its helicopters carrying injured patients to hospital. [Maryland State Police, 2/16/2003; Baltimore Sun, 3/7/2006] According to Galey, the unit has “the most resources for aircraft, medevac aircraft, that we knew were manned and ready to go.” However, Galey will later recall, in response to his request, “they came back and said, ‘No, we can’t respond.’”
Maryland Police Think They Cannot Launch Helicopters - When Galey is told that the unit cannot respond, he and the rest of his crew are “very shocked,” and, Galey will say, “[T]hat’s when we were starting to suspect there was something more to it.” According to later accounts, the unit cannot respond because the airspace has been shut down. [Rotor and Wing, 11/2001; US Naval Historical Center, 11/20/2001] (The FAA has issued a nationwide “ground stop” that prevents any aircraft from taking off (see (9:26 a.m.) September 11, 2001) and has also ordered that all airborne aircraft must land at the nearest airport (see (9:45 a.m.) September 11, 2001). [US Congress. House. Committee On Transportation And Infrastructure, 9/21/2001; 9/11 Commission, 7/24/2004, pp. 25, 29] Galey is currently unaware that the airspace has been shut down. However, the Maryland State Police helicopters should be able to respond all the same, because NORAD has told him, “The aircraft that you’re calling in, we’re going to allow to come in” (see (Shortly After 9:55 a.m.) September 11, 2001). According to Galey, the Maryland State Police “just didn’t know [that] if we requested them they could come.”
Other Departments Send Helicopters - Galey then contacts MedStar at the Washington Hospital Center and AirCare at Inova Fairfax Hospital in Virginia. Each of them dispatches helicopters to the Pentagon. Galey will recall that these two departments “hadn’t gotten the word that the airspace was shut down, and since I’m the one who requested the aircraft and informed NORAD, NORAD allowed them to come in.” [Rotor and Wing, 11/2001; US Naval Historical Center, 11/20/2001] It is unclear exactly when Galey contacts the different departments. But according to the Arlington County After-Action Report, the helicopter that MedStar launches arrives at the Pentagon at around 10:18 a.m. Inova Fairfax Hospital launches one helicopter at “approximately 10:00 a.m.” and then sends a second helicopter to the Pentagon at around 10:40 a.m. [US Department of Health and Human Services, 7/2002, pp. A-45]

Robert Natter. [Source: CBS]Rudy Washington, who is one of Rudolph Giuliani’s deputy mayors, had earlier on called Admiral Robert Natter, the commander of the US Atlantic Fleet at Norfolk Naval Station, Virginia, and requested air cover over New York (see (Between 8:46 a.m. and 9:03 a.m.) September 11, 2001). After the WTC’s South Tower collapses at 9:59, Washington heads to City Hall, where he again communicates with Natter. Natter informs him that the Pentagon has been hit, and says he has now gotten permission from NORAD to send some fighter jets over the city. [New York Daily News, 5/20/2004] However, when exactly these jets are launched and when they arrive over New York is unstated. Patrick Burns, who is currently at the Norfolk Naval Station for his two-week Naval Reserve obligation, later recalls, “Air cover was already up with Navy jets out of Naval Air Station Oceana.” Naval Air Station Oceana, in Virginia Beach, Virginia, is home to F-14 Tomcat and F/A-18 Hornet fighters. But Burns does not state a time for when these fighters are airborne. [Virginian-Pilot, 9/22/2001; Digital Journalist, 10/2001; Notre Dame Magazine, 4/2007] The 9/11 Commission Report will make no mention of any Naval fighters. [9/11 Commission, 7/24/2004]

When a housekeeper at the Park Inn in Boston, where 9/11 hijackers Wail and Waleed Alshehri stayed before the attacks, attempts to clean their room, a “male of foreign descent” tells her she should not clean it yet and should return in the early afternoon, as someone is still asleep there. The hijackers are thought to have left the hotel and checked in for their flights several hours previously (see (6:20 a.m.-7:48 a.m.) September 11, 2001). The male’s identity is unknown and the housekeeper’s story appears to confuse the FBI, as an entry about it in an FBI timeline drafted after the attacks ends with five question marks. [Federal Bureau of Investigation, 10/2001, pp. 292 ]

NORAD’s Northeast Air Defense Sector (NEADS) receives a call from a NORAD unit in Canada, reporting another suspected hijacked aircraft that is heading south from Canada, across the border toward Washington, DC. [Vanity Fair, 8/1/2006]
Aircraft Reported on Chat System - A member of staff at NEADS relays to their colleagues that the aircraft is from an “unknown departure airport, heading towards Washington,” but they do not “know any codes or anything” else about it. [North American Aerospace Defense Command, 9/11/2001] Another member of staff at NEADS calls the Canadian unit for more information. A Lance Corporal Nicholson there says only that he has seen “something on the chat” about a “possible” aircraft. [North American Aerospace Defense Command, 9/11/2001; North American Aerospace Defense Command, 9/11/2001] (Nicholson is presumably referring to NORAD’s computer chat system. [Spencer, 2008, pp. 139] )
Fighter Unit Contacted - According to author Lynn Spencer, NEADS battle commander Colonel Robert Marr contacts a military unit in Syracuse, New York, to get fighter jets sent after the suspicious flight. [Spencer, 2008, pp. 223] However, the first jets to launch from Syracuse will not take off until 10:42 a.m. (see 10:42 a.m. September 11, 2001). [Post-Standard (Syracuse), 9/12/2001]
Report Is a False Alarm - The suspected hijacking is soon revealed to be a false alarm. Nicholson will call from Canada and tell NEADS: “Be advised… that our [intelligence team] is not assessing that there is an actual aircraft problem. It’s just that there could be problems from our area.… There’s no actual aircraft that we suspect as being a danger.” He will add that his intelligence people “haven’t got any particular aircraft in mind.” [North American Aerospace Defense Command, 9/11/2001; Vanity Fair, 8/1/2006]
Numerous Erroneous Reports - This is one of the numerous mistaken reports of hijackings received during the course of the morning (see (9:09 a.m. and After) September 11, 2001). According to Vanity Fair: “In the barrage of information and misinformation, it becomes increasingly difficult for the controllers [at NEADS] to keep count of how many suspected hijackings are pending. So far, it is known that three have hit buildings, but given the uncertainty about the fates of American 11 and American 77—no one knows yet that this is the plane that hit the Pentagon—the sense at NEADS is that there are possibly three hijacked jets still out there, and who knows how many more yet to be reported.” At the time NEADS is informed of the suspicious aircraft coming in from Canada, “no one on the military side is aware that United 93 has been hijacked.” [Vanity Fair, 8/1/2006]

An F-15 Eagle from the 125th Fighter Wing. [Source: Shaun Withers / US Air Force]Fighter jets belonging to a military unit in Jacksonville, Florida, launch to escort Air Force One after it takes off from Sarasota, Florida (see 9:54 a.m. September 11, 2001), some accounts will later indicate. [New York Times, 9/16/2001; Daily Telegraph, 12/16/2001] However, other accounts will indicate that these jets, if launched, never reach the president’s plane. [Code One Magazine, 1/2002; CBS News, 9/11/2002; Spencer, 2008, pp. 255]
Fighters Reportedly Launched - The New York Times will report that at 10:41 a.m., Air Force One is “headed toward Jacksonville to meet jets scrambled to give the presidential jet its own air cover.” [New York Times, 9/16/2001] And, according to a report in the Daily Telegraph, after Air Force One climbs to 40,000 feet, it is “joined by an escort of F-16 fighters from a base near Jacksonville.” [Daily Telegraph, 12/16/2001] These reports are presumably referring to jets belonging to the 125th Fighter Wing, a unit of the Florida Air National Guard located at Jacksonville International Airport. The wing keeps two F-15s on alert at Homestead Air Reserve Base, near Miami, ready for immediate takeoff, as part of NORAD’s air sovereignty mission. [Airman, 12/1999; GlobalSecurity (.org), 8/21/2005; Florida Air National Guard, 2009]
Fighters Likely Launched from Homestead - If 125th Fighter Wing jets are scrambled to accompany Air Force One, it appears they would be the unit’s F-15s on alert at Homestead, rather than its fighters at Jacksonville Airport. Major Charles Chambers, who is at the National Military Command Center at the Pentagon, will state within a week of the attacks, “Fighters had been scrambled from Homestead [Air Reserve Base] and were escorting Air Force One westward.” [US Department of Defense, 9/2001] In contrast, at Jacksonville International Airport, according to a 2007 report in the Florida Times-Union, “Within hours of the 2001 terrorist attacks, the wing’s aircraft were sitting on a JIA runway ready for the order to scramble.” [Florida Times-Union, 9/15/2007] And an account published by the Florida Air National Guard will only say, “On Sept. 11, 2001, several loaded F-15 aircraft lined Runway 13/31 [at Jacksonville Airport] for the first time in history.” [Eagle's Eye, 2007 ]
Fighters Apparently Do Not Reach Air Force One - Most accounts will contradict Chambers’ claim that, if indeed 125th Fighter Wing jets are scrambled toward the president’s plane, they are subsequently “escorting Air Force One westward.” According to the 1st Air Force’s book about 9/11, it is in fact “[f]our F-16s from the 147th Fighter Wing, Texas Air National Guard,” that accompany Air Force One “from the panhandle of Florida to Barksdale Air Force Base.” [Filson, 2003, pp. 87] CBS News will report that the first fighters to reach Air Force One are two F-16s from the 147th Fighter Wing (see (11:29 a.m.) September 11, 2001). [CBS News, 9/11/2002; Spencer, 2008, pp. 255] And Major General Larry Arnold, the commanding general of NORAD’s Continental US Region, will only say that 147th Fighter Wing F-16s “chased Air Force One and landed with the president at Barksdale AFB in Louisiana,” making no mention of any 125th Fighter Wing jets being scrambled. [Code One Magazine, 1/2002] At NORAD’s other alert site in Florida besides Homestead—a unit at Tyndall Air Force Base—the two alert fighters are put on “battle stations,” but apparently do not take off to escort Air Force One (see (10:00 a.m.) September 11, 2001). [Filson, 2003, pp. 87]

Based on information from the plane’s flight data recorder, the National Transportation Safety Board will later determine that Flight 93’s autopilot is turned off at “about 10:00,” and remains off for the flight’s final minutes. [National Transportation Safety Board, 2/13/2002 ] Phil Bradshaw, whose wife is an attendant on Flight 93, will later hear the plane’s cockpit voice recording. Being a pilot himself, he recognizes on it the sound of the alarm that goes off when the autopilot is disconnected. [News and Record (Piedmont Triad, NC), 9/11/2002] CNN’s Kelli Arena will hear the recording during the 2006 Zacarias Moussaoui trial and will report that, shortly after this alarm sounds, “Another alarm goes off.” [CNN, 4/12/2006] According to journalist and author Jere Longman, as well as the alarm set off when the autopilot was disconnected, another alarm “would have sounded because the plane was traveling at five hundred seventy-five miles an hour in the final minutes, far exceeding the design limits of four hundred twenty-five miles an hour below twenty thousand feet and two hundred eighty-seven miles an hour below ten thousand feet.” [Longman, 2002, pp. 208] So presumably this is the second alarm described by Arena.

The pilots that took off from Langley Air Force Base (see (9:25 a.m.-9:30 a.m.) September 11, 2001) hear a warning over radio that errant aircraft will be shot down, and receive an instruction from the Secret Service to protect the White House. [Spencer, 2008, pp. 222-223]
Pilots Learn of FAA Order - The three Langley fighter jets have now reached the Baltimore-Washington area. [Spencer, 2008, pp. 222] The pilots hear over their radios that the FAA has ordered all civilian aircraft to land. [New York Times, 10/16/2001] (The FAA issued this instruction at around 9:45 a.m. (see (9:45 a.m.) September 11, 2001). [US Congress. House. Committee On Transportation And Infrastructure, 9/21/2001; 9/11 Commission, 7/24/2004, pp. 29] )
Borgstrom Hears Shootdown Warning - The three pilots are all on different radio frequencies, but are able to communicate between themselves on their auxiliary frequency. According to author Lynn Spencer, one of them, Captain Craig Borgstrom, hears a message over the emergency radio frequency that is in response to the FAA’s recent order: “Attention all aircraft! Attention all aircraft! You are ordered to land at the nearest suitable airport. All aircraft must land immediately. Violators will be shot down.” The source of this message is unstated. [Filson, 2003, pp. 66; Spencer, 2008, pp. 222-223] (Author Leslie Filson will describe the Langley pilots hearing what is apparently a separate but similar message later on, some time after 10:42 a.m. (see 10:05 a.m.-11:05 a.m. September 11, 2001). [Filson, 2003, pp. 82] )
Instructed to Protect the White House - Around the time Borgstrom hears this, Major Dean Eckmann, the lead Langley pilot, is on the radio with the FAA’s Washington Center. A Secret Service agent has arrived there and wants to talk to him. [Filson, 2003, pp. 68; Spencer, 2008, pp. 222-223] Eckmann then receives a garbled message over his radio, which is difficult to make out. [New York Times, 11/15/2001] The message is, “Protect the house.” Eckmann will later recall, “I took it to mean protect the White House.” [Filson, 2003, pp. 68] He notifies the two other pilots—Borgstrom and Major Brad Derrig—of this message. He tells them, “I think I just talked to the Secret Service, but I’m not sure.” [New York Times, 11/15/2001]
Possible Shootdown Order? - According to Spencer, this message means that “Unknown to NEADS” (NORAD’s Northeast Air Defense Sector), Eckmann has been “given shootdown authority directly from the Secret Service, bypassing the military chain of command.” [Spencer, 2008, pp. 223] But Borgstrom and Derrig will later say they “never received explicit orders to fire on incoming planes perceived to be hostile.” [New York Times, 11/15/2001] Borgstrom radios NEADS weapons director Steve Citino and asks for specific instructions about what to do (see 10:07 a.m. September 11, 2001). [Spencer, 2008, pp. 223] According to the 9/11 Commission, NEADS will only learn that NORAD has been given clearance to shoot down threatening aircraft at 10:31 a.m., and even then it does not pass this order along to the fighter pilots under its command (see 10:31 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 42-43]

Twenty minutes after the 9/11 attacks in New York (see 8:46 a.m. September 11, 2001 and 9:03 a.m. September 11, 2001) and Washington (see 9:37 a.m. September 11, 2001), a bomb truck is stationed in downtown Oklahoma City, in preparation for any potential bombing related to the 1995 Oklahoma City bombing (see 8:35 a.m. - 9:02 a.m. April 19, 1995). Additionally, an Oklahoma County Sheriff’s Department command post is activated where convicted bombing conspirator Terry Nichols (see September 5, 2001) is being held. [The Oklahoman, 4/2009]

Space view of New York on 9/11/01 [Source: NASA]The commander of the International Space Station, Frank Culbertson, is informed of the 9/11 attacks by NASA’s ground control. The station is orbiting the earth at a distance of about 300 miles. In addition to Culbertson, the station is manned by two Russian cosmonauts, Vladimir Dezhurov and Mikhail Tyurin. Culbertson quickly determines that the station will soon fly over New England. He positions himself with video and photographic equipment to record what he can see from space. One of his pictures, apparently taken after the collapse of both towers, shows a plume of smoke rising tens of miles into the sky. Vladimir Dezhurov will later take part in a televised debate during which he will apparently express skepticism about the US government’s version of the attacks (see September 12, 2008). [National Aeronautics and Space Administration (NASA), 9/12/2001; CNN, 10/15/2001; New York Times, 11/27/2001; Guardian, 9/11/2002]

Potential pilots Don Greene and Andrew Garcia. [Source: Family photos]During this time, there apparently are no calls from Flight 93. Several cell phones that are left on record only silence. For instance, although Todd Beamer does not hang up, nothing more is heard after he puts down the phone, suggesting things are quiet in the back of the plane. [Longman, 2002, pp. 218] The only exception is Richard Makely, who listens to Jeremy Glick’s open phone line after Glick goes to attack the hijackers. A reporter summarizes Makely explaining that, “The silence last[s] two minutes, then there [is] screaming. More silence, followed by more screams. Finally, there [is] a mechanical sound, followed by nothing.” [San Francisco Chronicle, 9/17/2001] The second silence lasts between 60 and 90 seconds. [Longman, 2002, pp. 219] Near the end of the cockpit voice recording, loud wind sounds can be heard. [Longman, 2002, pp. 270-271; CNN, 4/19/2002] “Sources claim the last thing heard on the cockpit voice recorder is the sound of wind—suggesting the plane had been holed.” [Mirror, 9/12/2002] There was at least one passenger, Don Greene, who was a professional pilot. Another passenger, Andrew Garcia, was a former flight controller. [Newsweek, 9/22/2001; Pittsburgh Post-Gazette, 10/28/2001; Daily Telegraph, 7/31/2002]

Some time after the first WTC tower collapse, counterterrorism “tsar” Richard Clarke orders all landmark buildings and all federal buildings in the US evacuated. He also orders all harbors and borders closed. [Clarke, 2004, pp. 14-15] The Sears Tower in Chicago begins evacuation around 10:02 a.m. Other prominent buildings are slower to evacuate. [Ottawa Citizen, 9/11/2001]

Air traffic controllers at the Cleveland Terminal Radar Approach Control (TRACON) remain suspicious of Delta Air Lines Flight 1989 as it is coming in to land at Cleveland Hopkins Airport, due to the pilot’s failure to use an important standard term in his communications with them. [Federal Aviation Administration, 9/16/2001] A TRACON is an FAA facility that guides aircraft approaching or departing an airport. Flights coming in to land will subsequently be passed on to the airport’s air traffic control tower once they are within five miles of the airport and below 2,500 feet. [Federal Aviation Administration, 3/24/2006] The Cleveland TRACON is in contact with Delta 1989 as it descends from 9,000 feet down to 3,000 feet. [Federal Aviation Administration, 9/16/2001] Delta 1989, a Boeing 767 out of Boston, is mistakenly suspected of being hijacked (see 9:39 a.m. September 11, 2001 and (Shortly After 9:44 a.m.) September 11, 2001) and has been instructed to land as soon as possible in Cleveland (see (9:42 a.m.) September 11, 2001). [USA Today, 8/13/2002; 9/11 Commission, 7/24/2004, pp. 27-28; Spencer, 2008, pp. 167-168; USA Today, 9/11/2008]
Pilot Does Not Use Term 'Heavy' - A detailed timeline provided by the Cleveland Airport control tower shortly after 9/11 will describe, “One anomaly that perpetuated concern by approach controllers in the face of constant information that there was nothing going on with [Delta 1989] was that the pilot never used the HEAVY designator in his communications.” [Federal Aviation Administration, 9/16/2001] The term “heavy” alerts controllers to provide extra spacing behind very large aircraft, which are above a certain weight, because these aircraft generate significant wake turbulence. [USA Today, 6/1/2005; USA Today, 5/22/2006]
Controllers Skeptical of Delta 1989's Security - While the TRACON controllers use the “heavy” designator, “the pilot [of Delta 1989] did not respond with it.” The control tower’s timeline will state that, while this detail “may seem minor,” it “should not be overlooked. The use of HEAVY in the terminal environment is of the highest importance. Increased separation standards are required, and misapplication of separation standards can be disastrous. For pilots, not referring to a heavy aircraft as HEAVY is tantamount to calling a doctor ‘Mister.’” As a result, “This omission, along with all of the other information flying around, kept everyone alert and skeptical of the security of the flight.” [Federal Aviation Administration, 9/16/2001]

Throughout the day of 9/11 and after, members of the public in New York City experience significant communications problems, particularly with cell phones. “In the aftermath [of the attacks], and for several days afterwards, cellular phone services were either not working or were severely overloaded.” [SatNews, 10/19/2001] As Time magazine reports, “Lines formed, at least 20 people long, at all pay phones, because cell phones were not working.” [Time, 9/14/2001] (Reportedly, though, the 911 system is not disrupted.) Later accounts will suggest that an increased volume of phone calls being made in response to the attacks may have overloaded networks. Within minutes of the first attack, according to the New York Times, there were “tens of millions of [phone] calls—many from worried relatives and friends—that threatened to clog the system.” [New York Times, 9/20/2001] The call volume of Verizon Communications, which has its main regional switching station across the street from the World Trade Center, reaches twice its normal daily rate of 115 million calls in New York City. “And although it remained operational, the wireless network experienced massive congestion that prevented most calls from getting through. During the peak of the chaos, Verizon experienced nearly 100 percent more traffic than normal on its nationwide wireless network.” [Verton, 2003, pp. 148] Some of the communications problems in the New York area are later attributed to physical damage to the infrastructure. A report by the Mineta Transportation Institute will summarize, “The collapse of the World Trade Center towers knocked out Verizon’s switching center in Lower Manhattan and severely damaged the infrastructure for cellular telephones. Telephone communications for NYPD Command and Control was also destroyed in the attack. As a consequence, cell phone service was subsequently overloaded. NYC Transit lost a key portion of its fiber-optic network in one tunnel.” [Jenkins and Edwards-Winslow, 9/2003, pp. 33] Similar communication problems are also experienced around Washington, DC, and some top government officials are affected (see (After 8:55 a.m.) September 11, 2001). According to one government official, the nation was “deaf, dumb, and blind” for much of the day. [Verton, 2003, pp. 151]

Pilots from the 180th Fighter Wing who are called to service on 9/11. [Source: WTOL]Two fighter pilots with a Toledo, Ohio, military unit that answer a call from NORAD’s Northeast Air Defense Sector (NEADS), requesting assistance in response to the morning’s attacks, respond as if they think the call is a joke. [Spencer, 2008, pp. 178-179] The pilots belong to the 180th Fighter Wing of the Ohio Air National Guard, which is based at Toledo Express Airport. [GlobalSecurity (.org), 1/1/2002; WTOL, 9/11/2006]
Pilot Puzzled by Call - When a weapons technician at NEADS contacts the Toledo unit, his call is answered by F-16 pilot Ed Rinke. The weapons technician says, “We need you to scramble two airplanes right now.” However, according to author Lynn Spencer, “to Rinke, the order makes no sense.” The Toledo unit “is not an alert squadron and does not report to NEADS.” Rinke is only a part-time pilot, and thinks someone more suitable should be taking the call. He shouts down the hall: “Hey, we’ve got a phone call at the duty desk. Some guy wants us to launch alert fighters!” Pilot Scott Reed responds: “What? We don’t do that!” Pushing the phone toward Reed, Rinke says: “You take it! It’s somebody on drugs.”
Second Pilot Tells NEADS It Is Calling 'the Wrong People' - After Reed takes the phone, the weapons technician repeats his request, saying, “Major Reed, we need you to scramble two airplanes.” Yet Reed sounds as baffled as Rinke had been. He answers: “You’re calling Toledo, Ohio. Do you not understand who you’re calling here? Who are you trying to call, because you are obviously calling the wrong people. This is Toledo. We don’t have any alert birds. This is Toledo. Do you understand that?”
Commander Takes Call, Orders Launch - Fortunately, the two pilots’ wing commander then takes over the call and responds to it more appropriately. Within minutes, according to Spencer, he will instruct Reed and Rinke to take off in two F-16s. Rinke reportedly thinks to himself, “Things must be really bad if NEADS is launching Toledo on an active air scramble!” [Spencer, 2008, pp. 178-179] The Toledo Blade will later comment, “Toledo’s response on Sept. 11 is believed to be the first time the unit has answered a call from the North American Aerospace Defense Command.” Two 180th Fighter Wing jets will take off from the Toledo unit at 10:17 a.m., but accounts will conflict over who the pilots are (see 10:17 a.m. September 11, 2001). [Toledo Blade, 12/9/2001; WTOL, 9/11/2006; Spencer, 2008, pp. 179]

David Addington. [Source: David Bohrer / White House]According to an in-depth examination by the Washington Post, within hours of the 9/11 attacks, Vice President Dick Cheney begins working to secure additional powers for the White House. Cheney had plans in place to begin acquiring these powers for the executive branch before the attacks, but had not begun to execute them.
Gathering the Team - David Addington, Cheney’s general counsel and legal adviser, had been walking home after having to leave the now-evacuated Eisenhower Executive Office Building. He receives a message from the White House telling him to turn around, because the vice president needs him. After Addington joins Cheney in the Presidential Emergency Operations Center (PEOC) below the East Wing of the White House, the pair reportedly begin “contemplating the founding question of the legal revolution to come: What extraordinary powers will the president need for his response?” Later in the day, Addington connects by secure video with Timothy Flanigan, the deputy White House counsel, who is in the White House Situation Room. John Yoo, the deputy chief of the Office of Legal Counsel, is also patched in from the Justice Department’s command center. White House counsel Alberto Gonzales joins them later. This forms the core legal team that Cheney will oversee after the terrorist attacks. Associate White House counsel Bradford Berenson will later recall: “Addington, Flanigan and Gonzales were really a triumvirate. [Yoo] was a supporting player.” Addington dominates the group. Gonzales is there primarily because of his relationship with President Bush. He is not, Yoo will later recall, “a law-of-war expert and [doesn’t] have very developed views.” Along with these allies, Cheney will provide what the Washington Post calls “the rationale and political muscle to drive far-reaching legal changes through the White House, the Justice Department, and the Pentagon,” which will free the president to fight the war on terror, “as he saw fit.”
Drafting the AUMF - The team begins drafting the document that will become the Authorization to Use Military Force (AUMF—see October 10, 2002) passed by Congress for the assault on Afghanistan. In the words of the group, the president is authorized “to use all necessary and appropriate force against those nations, organizations, or persons he determines planned, authorized, committed, or aided the terrorist attacks that occurred on September 11, 2001, or harbored such organizations or persons, in order to prevent any future acts of international terrorism against the United States.”
Extraordinarily Broad Language - The language is extraordinarily broad; Yoo will later explain that they chose such sweeping language because “this war was so different, you can’t predict what might come up.” The AUMF draft is the first of numerous attempts to secure broad powers for the presidency, most justified by the 9/11 attacks. The Washington Post will later report, “In fact, the triumvirate knew very well what would come next: the interception—without a warrant—of communications to and from the United States” (see September 25, 2001). [CNN, 9/11/2001; CNN, 9/12/2001; Unger, 2007, pp. 220-221; Washington Post, 6/24/2007]

Dorothy Garcia. [Source: Darryl Bush / San Francisco Chronicle]Andrew Garcia, a passenger on Flight 93, makes a phone call to his wife, Dorothy Garcia, but is quickly cut off and does not call again. [Longman, 2002, pp. 190-191; Discovery Channel, 2005] Garcia, a 62-year-old businessman from Portola Valley in the San Francisco Bay Area, calls his wife on his cell phone. He is only able to get out one word, her name “Dorothy.” [Los Angeles Times, 9/14/2001; Sun (Sunnyvale), 9/26/2001; San Francisco Chronicle, 12/27/2001] According to Garcia’s son, the line then “got staticky and faded out.” [San Francisco Chronicle, 9/14/2001]

General Henry Shelton, the chairman of the Joint Chiefs of Staff, talks over the phone with General Richard Myers, the vice chairman of the Joint Chiefs of Staff, who is at the Pentagon, and is given information about the Pentagon attack and the military’s response to the terrorist attacks. Shelton took off at 7:15 a.m. to fly to Europe for a NATO conference (see 7:15 a.m. September 11, 2001). He learned of the attacks in New York while his plane was over the Atlantic Ocean, and has just been told of a “big explosion at the Pentagon” (see (8:50 a.m.-10:00 a.m.) September 11, 2001).
First Report Is of a Hand Grenade Going Off at Pentagon - Shelton heads to the communications console just behind the plane’s cockpit. From there, he talks over a secure, encrypted phone line with Myers, who is in the National Military Command Center (NMCC) at the Pentagon. Myers updates Shelton on what is known about the explosion at the Pentagon. He says the first report is that a hand grenade went off in the Pentagon parking lot.
Myers Updates Shelton on Military Response to Attacks - Myers then gives Shelton a complete status report. He says: “We’ve transitioned the SIEC [significant event conference] into an air threat conference call, which is in progress as we speak (see 9:29 a.m.-9:34 a.m. September 11, 2001 and 9:37 a.m.-9:39 a.m. September 11, 2001). FAA has requested that NORAD take over control of US airspace. Fighters have scrambled to escort Air Force One (see (After 9:56 a.m.) September 11, 2001) and we’re sending AWACS up to provide further monitoring (see Before 9:55 a.m. September 11, 2001). We’ve escalated to Threatcon Delta and are about to launch the NAOC [National Airborne Operations Center plane]. Bases around the world are locked tight, [Deputy Secretary of Defense Paul] Wolfowitz has been relocated to Site R (see (11:00 a.m.) September 11, 2001), plus, [Deputy National Security Adviser Stephen] Hadley has requested we implement full ‘Continuity of Government measures’ (see 9:59 a.m. September 11, 2001), and we are proceeding along those lines.”
Myers Says Plane Hit the Pentagon - Myers is then interrupted by some commotion in the background. When he returns to the line, he tells Shelton, “Okay, we just got the word: the prior report was incorrect; it was not a hand grenade that exploded, it was another commercial airline that struck the Pentagon.” He then continues with his status report, saying, “[P]er the president, we’ve gone weapons free in the event of a hijacked aircraft or one that threatens the White House.” [Giesemann, 2008, pp. 20, 22-24; Shelton, Levinson, and McConnell, 2010, pp. 430-433]
Shelton Wants to Return to Washington - Myers will tell the 9/11 Commission that after he arrives at the NMCC—presumably referring to the time of this phone call—he “recommended General Shelton return to Washington, DC.” [9/11 Commission, 6/17/2004 ] But Shelton will recall that he tells Myers, “I need you to call Ed Eberhart [General Ralph Eberhart, the commander of NORAD] at NORAD and let him know that we’re coming back [to Washington] on Speckled Trout [the nickname of the plane he is on], and tell him that I would consider it a personal favor if he would see to it that the chairman and his crew are not shot down on their way back to Andrews.” Myers confirms, “Will do.” According to Shelton, his plane is called back 10 minutes later “with confirmation that we had been officially cleared to fly through the shutdown airspace.” [Shelton, Levinson, and McConnell, 2010, pp. 433] But according to Captain Rob Pedersen, the flight navigator on Shelton’s plane, it is several hours before the plane is cleared to enter the US airspace (see (After 9:45 a.m.) September 11, 2001). [Air Force Magazine, 9/2011 ] The plane will therefore only land at Andrews Air Force Base, near Washington, at 4:40 p.m. (see 4:40 p.m. September 11, 2001) and Shelton will only arrive at the NMCC an hour after that (see 5:40 p.m. September 11, 2001). [Federal Aviation Administration, 9/11/2001 ; Myers, 2009, pp. 159] The exact time of the call between Shelton and Myers is unclear, though it would be at some time after about 10:00 a.m., when Myers arrives at the NMCC (see (Between 9:55 a.m. and 10:25 a.m.) September 11, 2001). [9/11 Commission, 2/17/2004 ; 9/11 Commission, 7/24/2004, pp. 38]

Shortly after arriving at Washington’s Dulles Airport, from which Flight 77 took off, the FBI confiscates a security tape from a checkpoint through which the hijackers passed before boarding the plane. Airport security manager Ed Nelson will later say: “They pulled the tape right away.… They brought me to look at it. They went right to the first hijacker on the tape and identified him. They knew who the hijackers were out of hundreds of people going through the checkpoints. They would go ‘roll and stop it’ and showed me each of the hijackers.… It boggles my mind that they had already had the hijackers identified.… Both metal detectors were open at that time, and lots of traffic was moving through. So picking people out is hard.… I wanted to know how they had that kind of information. So fast. It didn’t make sense to me.” [Trento and Trento, 2006, pp. 37] Some of the hijackers are identified on the passenger manifests around this time (see (9:59 a.m.) September 11, 2001), and this knowledge is disseminated in the US intelligence community (see (After 10:06 a.m.) September 11, 2001 and (11:00 a.m.) September 11, 2001).

Bill Wright. [Source: WTAE-TV]Bill Wright is piloting a small plane when an air traffic controller asks him to look around outside his window, according to his later claims. Wright sees Flight 93 three miles away—close enough that he can see the United Airlines colors. Air traffic control asks him the plane’s altitude, and then commands him to get away from the plane and land immediately. Wright sees the plane rock back and forth three or four times before he flies from the area. He will later say, “That’s one of the first things that went through my mind when they told us to get as far away from it as fast as we could—that either they were expecting it to blow up or they were going to shoot it down, but that’s pure speculation.” [Pittsburgh Channel, 9/19/2001] According to the 9/11 Commission, the FAA Command Center tells FAA headquarters that a nearby plane has seen Flight 93 “waving his wings.” The Commission will say, “The aircraft had witnessed the radical gyrations in what we believe was the hijackers’ effort to defeat the passenger assault.” [9/11 Commission, 6/17/2004] This presumably is a reference to Wright.

Secret Service emergency response team officers patrolling the South Lawn of the White House. [Source: Associated Press]Laura Bush, the president’s wife, is escorted out of the Russell Senate Office Building in Washington, DC, by members of the Secret Service with their guns drawn, to be driven away to a secure location. [National Journal, 8/31/2002; Bush, 2010, pp. 200] People began evacuating from the Russell Senate Office Building and the nearby Capitol building at 9:48 a.m., apparently due to concerns that a plane was heading toward Capitol Hill (see 9:48 a.m. September 11, 2001). [Associated Press, 9/11/2001; Associated Press, 8/21/2002; CNN, 9/11/2006] While Bush and her staff were waiting for the Secret Service emergency response team to arrive and take them away from the Russell Office Building, they stayed in the office of Senator Judd Gregg (R-NH) (see (9:50 a.m.-10:00 a.m.) September 11, 2001).
Emergency Response Team Arrives with Guns Drawn - Secret Service agents collect the first lady from Gregg’s office at “[s]ometime after 10:00 a.m.,” Bush will later recall. [Bush, 2010, pp. 200] Bush usually travels with four Secret Service agents. [Kessler, 2006, pp. 136; Kessler, 2009, pp. 181] But her usual agents are now joined by “an additional Secret Service detail and an emergency response team, dressed in black tactical clothing like a SWAT force and moving with guns drawn.” As Bush is being hurried through the hallways, past panicked staffers leaving their offices, members of the emergency response team escorting her shout, “Get back!” and cover her every move with their guns. [Bush, 2010, pp. 200]
First Lady Escorted to Her Limousine - Noelia Rodriguez, the first lady’s press secretary, will recall that she and several other members of Bush’s staff reach Bush’s limousine before the first lady does. While they are waiting there, they chat excitedly, asking each other: “What could this be? Where are we going? What’s next?” But the driver instructs them to be quiet, saying, “Ladies, this is a time to pay attention.” “Just then,” Rodriguez will say, “what seemed like two dozen of these ninja guys surrounded the car—Secret Service agents all dressed in black. Mrs. Bush then got in the car.” [National Journal, 8/31/2002] Bush will describe, “We reached the underground entrance; the doors on the motorcade slammed shut, and we sped off.” [Bush, 2010, pp. 200]
Motorcade Delayed before Leaving Capitol Hill - However, Bush and those accompanying her reportedly face a delay as they are about to drive off. Ashleigh Adams, the first lady’s deputy press secretary, will describe, “At one point, we were all going to leave, and then Mrs. Bush got out of the motorcade and they [presumably members of the Secret Service] told us to stay in the staff van.” At this point, Adams will say, “Everyone was distraught” and they “didn’t know what was going on.” She will add: “We knew something was going on in DC, because we could see people running around. A lot of us were under the impression that there were car bombs going off throughout the city.” Bush and those accompanying her leave Capitol Hill at 10:10 a.m., according to Rodriguez. [National Journal, 8/31/2002] Bush’s Secret Service agents say they are going to take everyone to a secure location. This turns out to be the Secret Service headquarters in Washington (see (10:10 a.m.-10:55 a.m.) September 11, 2001). [Kessler, 2006, pp. 136]

John McWethy. [Source: Steve Fenn / ABC]ABC News correspondent John McWethy was at the Pentagon at the time it was hit. [Newsweek, 9/24/2001] At some later time, an army general he knows offers to take him in closer to the crash site. McWethy recalls: “I got in very close, got a look early on at the bad stuff. I could not, however, see any plane wreckage—it was well inside and had been, basically, vaporized.” [Gilbert et al., 2002, pp. 187] The following day, Arlington County Fire Chief Ed Plaugher will similarly tell reporters: “[T]here are some small pieces of aircraft visible from the interior during this firefighting operation… but not large sections. In other words, there’s no fuselage sections and that sort of thing.” [US Department of Defense, 9/12/2001] According to the Defense Department’s book about the Pentagon attack: “The front part of the relatively weak fuselage [of Flight 77] disintegrated, but the mid-section and tail-end continued moving for another fraction of a second.… The chain of destruction resulted in parts of the plane ending up inside the Pentagon in reverse of the order they had entered it, with the tail-end of the airliner penetrating the greatest distance into the building.” [Goldberg et al., 2007, pp. 17] Navy Lt. Kevin Shaeffer reportedly sees a “chunk of the 757’s nose cone and front landing gear” in the service road between the Pentagon’s B and C Rings. [Virginian-Pilot, 9/9/2002] Other witnesses say they see a large airplane tire. [Office of Medical History, 9/2004, pp. 117-118; Goldberg et al., 2007, pp. 54] Army Staff Sgt. Mark Williams, whose search and rescue team enters the Pentagon less than four hours after the attack, recalls seeing “the scorched bodies of several airline passengers… still strapped into their seats” inside the building. [USA Today, 9/13/2001]

NORAD’s Northeast Air Defense Sector (NEADS) contacts an Air National Guard unit in Toledo, Ohio, and requests that it launch two fighter jets in response to the attacks. [WTOL, 9/11/2006; Lynn Spencer, 2008; Spencer, 2008, pp. 178]
First Time that Unit Has Answered a NORAD Request - The 180th Fighter Wing of the Ohio Air National Guard is based at Toledo Express Airport. It has 20 F-16 fighter jets and about three dozen pilots. [Toledo Blade, 12/9/2001] Its “primary mission” is “to provide combat ready F-16C and support units capable of deploying worldwide in minimum response time.” [180th Fighter Wing, 9/19/2001; GlobalSecurity (.org.), 10/21/2001] The unit is not one of NORAD’s seven alert facilities around the US, and this is believed to be the first time it has ever answered a request for help from NORAD. [Airman, 12/1999; Toledo Blade, 12/9/2001]
Call due to Concern over Delta 1989 - According to author Lynn Spencer, a weapons technician at NEADS makes the call to the 180th FW due to concerns about Delta Air Lines Flight 1989, which is incorrectly thought to have been hijacked (see 9:39 a.m. September 11, 2001). [Spencer, 2008, pp. 177-178] NEADS has already contacted units in Minnesota and Michigan about this aircraft (see (Shortly After 9:41 a.m.) September 11, 2001 and (9:55 a.m.) September 11, 2001). [9/11 Commission, 1/23/2004 ; Vanity Fair, 8/1/2006] The weapons technician calls the Toledo unit after Master Sergeant Joe McCain gives an update across the NEADS operations floor: “Delta [19]89! Hard right turn!” According to Spencer, the weapons technician knows the 180th FW is much better positioned than the Selfridge unit’s fighters are to reach Delta 1989. [Spencer, 2008, pp. 178]
NORAD Commander Gives Different Explanation - But according to Larry Arnold, the commander of the Continental United States NORAD Region, the weapons technician’s call might also be in response to concerns over Flight 93. Arnold will say that NEADS calls the 180th FW “because we thought [Flight] 93 or Delta Flight 1989 might be headed toward Chicago.” [Filson, 2003, pp. 71] Two Toledo pilots who initially answer the call from NEADS appear to believe the call is a joke, but their wing commander then picks up the line and responds appropriately (see 10:01 a.m. September 11, 2001). [Spencer, 2008, pp. 178-179]
Unit Prepared for Crisis Like This - Although it is not one of NORAD’s alert facilities, Lt. Col. Gary Chudzinski, a former commander of the 180th FW, will later comment that the Toledo unit has always been aware that it could be alerted to crises such as the current one, “but you just don’t expect it.” According to General Paul Sullivan, who heads all Ohio Air National Guard units, the 180th FW’s pilots practice “air interception,” but a typical mission focuses on either a plane ferrying drugs or enemy fighters approaching America’s coasts. [Airman, 12/1999; Toledo Blade, 12/9/2001] Two 180th FW jets will take off from the Toledo unit at 10:17 a.m. (see 10:17 a.m. September 11, 2001). [Toledo Blade, 12/9/2001; WTOL, 9/11/2006]

The headquarters of the American Enterprise Institute in Washington, DC. [Source: Vornado / Charles E. Smith]David Frum, a speechwriter for President Bush, spends an hour on the phone with Richard Perle, the chairman of the Defense Policy Board, and Perle tells him the president needs to say he will hold not just terrorists but also the nations that harbor them responsible for the morning’s attacks. [Vanity Fair, 7/2003] Frum is currently at the headquarters of the American Enterprise Institute (AEI) think tank in Washington, DC, while Perle is at his vacation home in the south of France. [Packer, 2005, pp. 40] Frum went to the AEI headquarters after he was evacuated from the Eisenhower Executive Office Building, next to the White House (see (9:45 a.m.) September 11, 2001). On the way, he was joined by John McConnell, Vice President Dick Cheney’s chief speechwriter. After they arrived at the AEI headquarters, sometime after 10:00 a.m., Chris DeMuth, AEI’s president, offered the two men the use of offices, telephones, and Internet connections. [Frum, 2003, pp. 115-117]
Frum and Perle Discuss Attacks and How the US Should Respond - Frum therefore talks over the phone with Perle for about an hour. [Vanity Fair, 7/2003] “We had a very long conversation,” Frum will later recall, “and touched on a lot of things: where [the attacks] had come from and the mistakes of the past, things to be avoided.” The thing that emerges “most clearly” from the conversation, according to Frum, is how important it is for the president to “make it clear at the start: this was not going to be more law enforcement—they were not going to be indicting these terrorists—that this was to be understood as war.” [PBS Frontline, 7/7/2004] Therefore, Perle says to Frum, “Whatever else the president says, he must make clear that he’s holding responsible not just terrorists but whoever harbors those terrorists.” [Vanity Fair, 7/2003]
Speechwriters Leave AEI to Join Other White House Staffers - Frum and McConnell will subsequently leave the AEI headquarters and head to the DaimlerChrysler building in Washington, where dozens of White House employees go to continue their work. There, the two men will work on a statement for Bush to deliver when he returns to the capital. [Frum, 2003, pp. 117-118, 120; Politico, 9/9/2011] After he arrives back at the White House, Bush will give a speech to the nation from the Oval Office (see 8:30 p.m. September 11, 2001). [CNN, 9/12/2001; Washington Post, 1/27/2002] The speech Frum and McConnell work on, however, will have been discarded, with the president using something different. [PBS Frontline, 7/7/2004] But Bush will say in his speech that America “will make no distinction between the terrorists who committed these acts and those who harbor them.” [US President, 9/17/2001] Referring to the speech, journalist and author George Packer will comment: “Bush followed Perle’s advice to the word and then expanded on it: The rest of the world was either with America or with the terrorists.” [Packer, 2005, pp. 40]

Richard Dearlove. [Source: Daily Express]CIA Director George Tenet later recalls that, at some unspecified time during this day, a commercial passenger jet on its way to Britain behaves suspiciously, raising fears that al-Qaeda might have launched a two-continent attack. Aircraft are equipped with a device called a transponder, which transmits information to controllers on the ground, such as the plane’s flight number, altitude and speed. But this plane is emitting all kinds of “squawks,” with its transponder going off and on. Tenet calls Richard Dearlove, his counterpart at the British Secret Intelligence Service (MI6), to inform him of what is going on. Eventually, according to Tenet, the problem is resolved, and it turns out to have been caused simply by the transponder being faulty. [Washington Post, 9/17/2001; Tenet, 2007, pp. 166]

An aircraft that is in Sarasota, Florida, in support of President Bush’s visit there takes off with people and equipment on board shortly after Air Force One leaves Sarasota, and will eventually make its way back to Washington, DC. [Marist Magazine, 10/2002] Air Force One took off from Sarasota-Bradenton International Airport with Bush on board at around 9:54 a.m. (see 9:54 a.m. September 11, 2001). [Washington Post, 1/27/2002; 9/11 Commission, 7/24/2004, pp. 39] Members of the president’s entourage who have stayed behind in Sarasota subsequently load the second aircraft with vehicles and other items. The aircraft would normally be used just to transport people back to Washington. But Lieutenant Colonel Thomas Herman, a senior presidential communications officer, will later recall that all of the presidential limousines “and a bunch of equipment we had which I can’t really discuss” are loaded onto it. The aircraft then takes off from the Sarasota airport “not too long after the president got airborne.” Those on the aircraft, as well as Herman, include members of the Secret Service and Major Paul Montanus, one of the president’s military aides. Herman will not say where the aircraft goes, or why, after it leaves Sarasota. “Obviously we were in the air for a reason, for any contingency,” he will say. “Basically we could have gone to any city or county or location in the United States, and landed and supported the president at that location.” Herman will add that the flight “became a special mission.” The aircraft will land at Andrews Air Force Base, just outside Washington, “about 15 minutes after the president,” according to Herman. [Marist Magazine, 10/2002] This would mean it lands at around 6:45 p.m. [Sammon, 2002, pp. 127; Rove, 2010, pp. 263]

At the instruction of National Security Adviser Condoleezza Rice, Deputy Secretary of State Richard Armitage sends a cable out around the world saying the US government is still functioning. [US Department of State, 9/8/2006] Having recently arrived at the Presidential Emergency Operations Center (PEOC) below the White House (see (Shortly Before 9:59 a.m.) September 11, 2001), the first thing that occurs to Rice, she will later say, is that it is important to get a cable out to all diplomatic posts around the world, to say the United States government has “not been decapitated by this attack.… I thought to myself, we need to let everybody know that we’re still up and running.” [MSNBC, 9/11/2002] She therefore tells her deputy, Stephen Hadley, to call Armitage at the State Department, and urge him to send a cable to all overseas posts with this message. [BBC Radio 4, 8/1/2002 ; Bumiller, 2007, pp. xvi]

Rudy Washington. [Source: Congress of Racial Equality]After being caught in the dust plume when the WTC’s South Tower collapses at 9:59, Rudy Washington, who is one of Rudolph Giuliani’s deputy mayors, heads to City Hall, where he coordinates the city’s emergency response to the attacks. He is in contact with New York Governor George Pataki, high-ranking New York Police Department officers, and Navy Admiral Robert Natter, the commander of the US Atlantic Fleet (see (Shortly After 9:59 a.m.) September 11, 2001). He orders the closing of bridges. (Though, according to some accounts, the New York Port Authority ordered all bridges to be closed earlier on, at 9:21 (see 9:21 a.m. September 11, 2001).) As New York Daily News columnist Stanley Crouch later describes, Washington also finds “heavy machinery to get downtown for the cleanup and got the Navy to guard against a seaborne attack. He evacuated City Hall, which shook like crazy when the second tower fell. He gathered people who could give medical help, gave the order to find lights that could be used at Ground Zero and worked out new phone communications, since power was being lost. Accompanied by city engineers, he went into the streets around the fallen towers, testing the ground to make sure it would hold when the heavy equipment came in.” Washington’s efforts at developing an emergency strategy are reportedly aided by what he learned at an anti-terrorist training session chaired by counterterrorism “tsar” Richard Clarke and held at the WTC, in preparation for the millennium celebration (see (Late 1999)). Stanley Crouch later credits Rudy Washington with having “ran New York for the first few hours after the attack during a period when Giuliani was thought to have been killed inside the first building that went down.” [New York Daily News, 5/20/2004] During the initial hours following the attacks, between around 9:50 a.m. and midday, Mayor Giuliani is moving around between a series of temporary command posts (see (9:50 a.m.-10:10 a.m.) September 11, 2001 and (After 10:28 a.m.-12:00 pm.) September 11, 2001).

United Airlines official Sandy Rogers calls Ellen King at the FAA’s Command Center to discuss Flight 93. The timing of the call is not known specifically, although it appears to be after the Pentagon was hit and could not be long after Flight 93 is thought to have crashed, which is shortly after 10:00 a.m. (see (10:03 a.m.-10:10 a.m.) September 11, 2001 and (10:06 a.m.) September 11, 2001). Rogers tells King that Flight 93 has been hijacked, and King responds, “Oh God… thank you,” indicating she was previously unaware of the hijacking. However, the FAA had been aware of the situation since a few minutes after the hijacking took place (see (9:33 a.m.) September 11, 2001 and 9:34 a.m. September 11, 2001). Rogers also says: “It’s over Hagerstown now and you’re not aware of it. It’s heading toward Washington, DC, and we are under a threat of a hijacking on board and this flight is out of our control now heading toward Washington, DC.” Rogers states that United Airlines is “advising the military” about the plane and King also says that the FAA will do the same. [Federal Aviation Administration, 10/14/2003, pp. 37-39 ] However, there are no other reports of Flight 93 ever being over Hagerstown, which is in Maryland. Flight 93 is said to crash in Shanksville, Pennsylvania, and is thought never to reach Maryland. There will be some—apparently mistaken—reports that the plane is still airborne after it is thought to have crashed (see (Between 10:10 a.m. and 10:15 a.m.) September 11, 2001 and 10:10 a.m.-10:11 a.m. September 11, 2001), and this may be another such report.

Flight 93’s transponder, which was switched off after Flight 93 was hijacked, is turned back on just before the plane crashes, thereby revealing the plane’s altitude to air traffic controllers at the FAA’s Cleveland Center. [Federal Bureau of Investigation, 9/11/2001; MSNBC, 9/11/2002] A transponder is a device that sends a plane’s identifying information, speed, and altitude to controllers’ radar screens. [Washington Post, 9/16/2001] Flight 93’s transponder was switched off at around 9:40 a.m. (see (9:40 a.m.) September 11, 2001), although Cleveland Center controllers have still been able to follow Flight 93 on “primary radar,” which shows less information about a flight (see (9:41 a.m.-10:06 a.m.) September 11, 2001). [Federal Bureau of Investigation, 1/8/2002; 9/11 Commission, 7/24/2004, pp. 29; Cleveland Plain Dealer, 7/3/2011]
Plane Shown to Be Flying at 8,200 Feet - Flight 93’s transponder is reactivated at 10:02 a.m. and 50 seconds, and then stays on for “approximately 20 seconds,” according to “information from the flight data” provided to the FBI later today by Rick Kettell, the manager of the Cleveland Center. After the transponder is turned back on, Flight 93’s radar track is observed by Cleveland Center controllers Linda Justice and Stacey Taylor. The information from the transponder shows them that Flight 93 is at an altitude of 8,200 feet. [Federal Bureau of Investigation, 9/11/2001; Federal Aviation Administration, 9/16/2001 ; 9/11 Commission, 10/2/2003 ]
Plane Soon Disappears from Radar Screens - Flight 93 will crash into the ground at 10:03 a.m. and 11 seconds, according to the 9/11 Commission Report, less than 30 seconds after the transponder is reactivated (see (10:03 a.m.-10:10 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 30] Cleveland Center controllers will see the plane completely disappear from their radar screens around that time. [MSNBC, 9/11/2002] A Cleveland Center controller will then report, apparently over an FAA teleconference, that Flight 93’s transponder “came on briefly and then it went back off with the primary, and now we’ve lost him completely.” [Federal Aviation Administration, 9/11/2001] “I had two radar hits on [Flight 93],” Taylor will recall, adding that she then “lost the primary target on [Flight 93] and we suspected it had gone down.” [Federal Aviation Administration, 9/16/2001 ] The reason Flight 93’s transponder is switched back on just before the plane crashes is unclear. Taylor will comment, a year after 9/11: “That’s something we’ve always wanted to know. Why did the transponder come back on?” She will say Cleveland Center controllers wondered this because they believed that “the hijackers had shut it off so that they couldn’t be tracked.” [MSNBC, 9/11/2002]

Vice President Cheney and other leaders now in the White House bunker begin receiving reports from the Secret Service of a presumably hijacked aircraft heading toward Washington. The Secret Service is getting this information about Flight 93 through links to the FAA. However, they are looking at a projected path, not an actual radar return, so they do not realize that the plane crashes minutes later. [9/11 Commission, 6/17/2004]

The cockpit voice recording of Flight 93 was recorded on a 30-minute reel, which means that the tape is continually overwritten and only the final 30 minutes of any flight would be recorded. The government later permits relatives to hear this tape. Apparently, the version of the tape played to the family members begins at 9:31 a.m. and runs for 31 minutes, ending one minute before, according to the government, the plane crashes. [Longman, 2002, pp. 206-207; CNN, 4/19/2002] The New York Observer comments, “Some of the relatives are keen to find out why, at the peak of this struggle, the tape suddenly stops recording voices and all that is heard in the last 60 seconds or so is engine noise. Had the tape been tampered with?” [New York Observer, 6/20/2004]

According to the 9/11 Commission, a Flight 93 hijacker says, “Pull it down! Pull it down!” The airplane rolls onto its back as one of the hijackers shouts, “Allah o akbar! Allah o akbar!” The commission comments, “The hijackers remained at the controls but must have judged that the passengers were only seconds from overcoming them.” Presumably the plane crashes seconds later. [San Francisco Chronicle, 7/23/2004] However, there are questions as to whether the voice recording actually ends at this time. Furthermore, there is a near complete disconnect between these quotes and the quotes given in previous accounts of what the cockpit recording revealed (see (9:57 a.m. and After) September 11, 2001). For instance, in other accounts, passenger voices saying, “Give it to me!,” “I’m injured,” and “Roll it up” or “Lift it up” are heard just before the recording ends. [Observer, 12/2/2001; Newsweek, 12/3/2001; Longman, 2002, pp. 270-271; MSNBC, 7/30/2002; Daily Telegraph, 7/31/2002]

In the tiny town of Boswell, about ten miles north and slightly to the west of Flight 93’s crash site, Rodney Peterson and Brandon Leventry notice a passenger jet lumbering through the sky at about 2,000 feet. They realize such a big plane flying so low in that area is odd. They see the plane dip its wings sharply to the left, then to the right. The wings level off and the plane keeps flying south, continuing to descend slowly. Five minutes later, they hear news that the plane has crashed. Other witnesses also later describe the plane flying east-southeast, low, and wobbly. [New York Times, 9/14/2001; Longman, 2002, pp. 205-206] “Officials initially say that it looks like the plane was headed south when it hit the ground.” [News Channel 5 (Cleveland), 9/11/2001]

According to the 9/11 Commission, the NMCC learns about the Flight 93 hijacking at this time. Since the FAA has not yet been patched in to the NMCC’s conference call, the news comes from the White House. The White House learned about it from the Secret Service, and the Secret Service learned about it from the FAA. NORAD apparently is still unaware. Four minutes later, a NORAD representative on the conference call states, “NORAD has no indication of a hijack heading to Washington, D.C., at this time.” [9/11 Commission, 6/17/2004]

Smoke rising, minutes after Flight 93 crashes in Pennsylvania. [Source: CNN]Exactly when Flight 93 crashes is unclear. According to NORAD, Flight 93 crashes at 10:03 a.m. [North American Aerospace Defense Command, 9/18/2001] The 9/11 Commission gives an exact time of 11 seconds after 10:03 a.m. It will claim this “time is supported by evidence from the staff’s radar analysis, the flight data recorder, NTSB [National Transportation Safety Board] analysis, and infrared satellite data.” It does note that “[t]he precise crash time has been the subject of some dispute.” [9/11 Commission, 6/17/2004] However, a seismic study authorized by the US Army and drafted by scientists Won-Young Kim and Gerald Baum to determine when the plane crashed will conclude that the crash happened at 10:06:05 a.m. [Kim and Baum, 2002 ; San Francisco Chronicle, 12/9/2002] The discrepancy is so puzzling that the Philadelphia Daily News will publish an article on the issue, titled “Three-Minute Discrepancy in Tape.” This notes that leading seismologists agree on the 10:06 a.m. time, give or take a couple of seconds. [Philadelphia Daily News, 9/16/2002] The New York Observer will note that, in addition to the seismology study, “The FAA gives a crash time of 10:07 a.m. In addition, the New York Times, drawing on flight controllers in more than one FAA facility, put the time at 10:10 a.m. Up to a seven-minute discrepancy? In terms of an air disaster, seven minutes is close to an eternity. The way our nation has historically treated any airline tragedy is to pair up recordings from the cockpit and air traffic control and parse the timeline down to the hundredths of a second. However, as [former Inspector General of the Transportation Department] Mary Schiavo points out, ‘We don’t have an NTSB (National Transportation Safety Board) investigation here, and they ordinarily dissect the timeline to the thousandth of a second.’” [New York Observer, 2/15/2004]

The FBI is reportedly in “chaos,” in particular because its Critical Incident Response Group (CIRG) is stranded away from Washington, DC, being instead in California for a major training exercise. The CIRG would normally coordinate the FBI’s rapid response to a crisis incident, such as a terrorist attack. [NBC 4, 9/11/2001; Darling, 2010, pp. 73-75] But NBC News reports that the FBI has been “operating a massive exercise from their hostage rescue unit. All of their top teams, about 50 personnel, helicopters, equipment, [have been] in Monterey, California, for the last two days, scheduled to fly back today commercially. So all of those people are out of place.” [NBC 4, 9/11/2001] USA Today will add that the day’s attacks are “so unexpected that a joint FBI/CIA anti-terrorist task force that specifically prepared for this type of disaster was on a training exercise in Monterey.” [USA Today, 9/11/2001] NBC News concludes: “It’s fair to say, according to sources that we’ve talked to here at NBC, that the FBI rescue operations and other FBI operations are really in chaos right now, because they can’t reach their officials in New York, all of their phone lines are down. And now you’ve got all of their special experts on this stuck in Monterey, California.… So they are seriously out of pocket, and there is a real breakdown of the FBI anti-terror coordination team, which is of course the principal team that would lead any effort.” [NBC 4, 9/11/2001] The US politics website evote.com will similarly conclude, “[J]ust as the worst terrorist act was being committed on American lives and property, the chief federal agency responsible for preventing such crimes was being AWOL.” [Evote [.com], 9/11/2001] The CIRG arrived in California the previous day for a week of special weapons and tactics (SWAT)-related field training (see September 10, 2001). Its members will be flown back to Washington around late afternoon on a specially arranged flight (see Late Afternoon September 11, 2001). [Darling, 2010, pp. 75-76]

In response to the terrorist attacks in the United States, the Russian military cancels a major training exercise it has been holding, turning back its bomber aircraft and calling off planned missile testing. [Toronto Star, 12/9/2001; Defense Video and Imagery Distribution System, 9/8/2011] The Russian Air Force began the exercise—which was being conducted over the North Atlantic, Pacific, and Arctic Oceans—on September 10 (see September 10, 2001), and had planned for it to continue until September 14. NORAD has deployed fighter jets to Alaska and Northern Canada to monitor the exercise (see September 9, 2001).
Russians Cancel Exercise to Avoid Confusion - The Russians now call off their exercise, “to avoid misunderstandings, since US defenses were now on high alert in case of further possible terrorist attacks,” according to BBC correspondent Bridget Kendall. [BBC, 2001, pp. 161; North American Aerospace Defense Command, 9/9/2001; Washington Times, 9/11/2001] “The Russians knew NORAD would have its hands full,” the Toronto Star will report. Lieutenant Colonel William Glover, the commander of NORAD’s Air Warning Center, will say the Russians stop their exercise “because they understood the magnitude of what had happened to us in the United States. They didn’t want any questions; they didn’t want us worrying about what they would be doing or entering our Air Defense Identification Zone.”
Russia Tells US about Canceling Exercise - The Russians notify the US of their actions. Captain Michael Jellinek, the director of plans, requirements, and readiness at NORAD’s Cheyenne Mountain Operations Center in Colorado, will later recall: “They sent the message to the State Department clearly and unambiguously: ‘Don’t worry about our movements, we’re going to stay down for a while.’”
Russia's Actions Are 'Very Helpful' to US - It is unclear when exactly the Russians call off their exercise. According to the Toronto Star, they “immediately” cancel it “on seeing the attacks in New York and Washington.” Glover will say the Russians notify the US that they are stopping their exercise “after the United Flight 93 went into Shanksville” (see (10:03 a.m.-10:10 a.m.) September 11, 2001 and (10:06 a.m.) September 11, 2001). Jellinek will call the Russians’ actions in canceling their exercise “[v]ery, very useful. Very helpful.” Glover will comment, “[T]hat was amazing to me, personally, the fact that they stopped their exercise and… that they told us that they were going to stop the exercise.” [Toronto Star, 12/9/2001; Defense Video and Imagery Distribution System, 9/8/2011] Russian President Vladimir Putin will contact the White House and inform National Security Adviser Condoleezza Rice that the Russians are voluntarily canceling their exercise (see Between 10:32 a.m. and 11:45 a.m. September 11, 2001). [Washington Post, 1/27/2002]

Several local people believe they hear a missile overhead just before Flight 93 goes down. Barry Lichty, a US Navy veteran and mayor of Indian Lake Borough (just to the east of where Flight 93 crashes), is watching television with his wife. He says he hears “a loud roar above the house that sounded like a missile.… Shortly thereafter, we heard an explosion and a tremor. My first reaction, as a former utility employee, was that maybe someone shot a missile into the substation.” He says Flight 93 “did not come over my house. I don’t know what we heard.” [Kashurba, 2002, pp. 158-159] Joe Wilt, who lives a quarter-mile from the crash site, hears a “whistling like a missile, then a loud boom.” He says, “The first thing I thought it was, was a missile.” [Boston Globe, 9/12/2001; Washington Post, 9/12/2001] And Ernie Stuhl, the mayor of Shanksville, later says, “I know of two people - I will not mention names - that heard a missile. They both live very close, within a couple of hundred yards.… This one fellow’s served in Vietnam and he says he’s heard them, and he heard one that day.” [Philadelphia Daily News, 11/18/2001] Officials will emphatically deny that Flight 93 was shot down, as some people later suggest (see September 14, 2001). [Pittsburgh Tribune-Review, 9/14/2001; Longman, 2002, pp. 264] However, a number of witnesses report seeing a small, white jet plane near the crash site, around the time Flight 93 reportedly goes down (see (Before and After 10:06 a.m.) September 11, 2001).

Numerous eyewitnesses see and hear Flight 93 just before its crash:
Terry Butler, at Stoystown: He sees the plane come out of the clouds, low to the ground. “It was moving like you wouldn’t believe. Next thing I knew it makes a heck of a sharp, right-hand turn.” It banks to the right and appears to be trying to climb to clear one of the ridges, but it continues to turn to the right and then veers behind a ridge. About a second later it crashes. [St. Petersburg Times, 9/12/2001]
Accounts of the plane making strange noises -
Laura Temyer of Hooversville: “I didn’t see the plane but I heard the plane’s engine. Then I heard a loud thump that echoed off the hills and then I heard the plane’s engine. I heard two more loud thumps and didn’t hear the plane’s engine anymore after that.” (She insists that people she knows in state law enforcement have privately told her the plane was shot down, and that decompression sucked objects from the aircraft, explaining why there was a wide debris field.) [Philadelphia Daily News, 11/15/2001]
Charles Sturtz, a half-mile from the crash site: The plane is heading southeast and has its engines running. No smoke can be seen. “It was really roaring, you know. Like it was trying to go someplace, I guess.” [WPXI 11 (Pittsburgh), 9/13/2001]
Michael Merringer, two miles from the crash site: “I heard the engine gun two different times and then I heard a loud bang…” [Associated Press, 9/12/2001]
Tim Lensbouer, 300 yards away: “I heard it for ten or 15 seconds and it sounded like it was going full bore.” [Pittsburgh Post-Gazette, 9/12/2001]
Accounts of the plane flying upside down -
Rob Kimmel, several miles from the crash site: He sees it fly overhead, banking hard to the right. It is 200 feet or less off the ground as it crests a hill to the southeast. “I saw the top of the plane, not the bottom.” [Longman, 2002, pp. 210-211] Eric Peterson of Lambertsville: He sees a plane flying overhead unusually low. The plane seemed to be turning end-over-end as it dropped out of sight behind a tree line. [Pittsburgh Post-Gazette, 9/12/2001]
Bob Blair of Stoystown: He sees the plane spiraling and flying upside down, not much higher than the treetops, before crashing. [Daily American, 9/12/2001]
Accounts of a sudden plunge and more strange sounds -
An unnamed witness says he hears two loud bangs before watching the plane take a downward turn of nearly 90 degrees. [News Channel 5 (Cleveland), 9/11/2001]
Tom Fritz, about a quarter-mile from the crash site: He hears a sound that “wasn’t quite right” and looks up in the sky. “It dropped all of a sudden, like a stone,” going “so fast that you couldn’t even make out what color it was.” [St. Petersburg Times, 9/12/2001]
Terry Butler, a few miles north of Lambertsville: “It dropped out of the clouds.” The plane rose slightly, trying to gain altitude, then “it just went flip to the right and then straight down.” [Pittsburgh Post-Gazette, 9/12/2001]
Lee Purbaugh, 300 yards away: “There was an incredibly loud rumbling sound and there it was, right there, right above my head—maybe 50 feet up.… I saw it rock from side to side then, suddenly, it dipped and dived, nose first, with a huge explosion, into the ground. I knew immediately that no one could possibly have survived.” [Independent, 8/13/2002]
Upside down and a sudden plunge -
Linda Shepley: She hears a loud bang and sees the plane bank to the side. [ABC News, 9/11/2001] She sees the plane wobbling right and left, at a low altitude of roughly 2,500 feet, when suddenly the right wing dips straight down, and the plane plunges into the earth. She says she has an unobstructed view of Flight 93’s final two minutes. [Philadelphia Daily News, 11/15/2001]
Kelly Leverknight in Stony Creek Township of Shanksville: “There was no smoke, it just went straight down. I saw the belly of the plane.” It sounds like it is flying low, and it’s heading east. [Daily American, 9/12/2001; St. Petersburg Times, 9/12/2001]
Tim Thornsberg, working in a nearby strip mine: “It came in low over the trees and started wobbling. Then it just rolled over and was flying upside down for a few seconds… and then it kind of stalled and did a nose dive over the trees.” [WPXI 11 (Pittsburgh), 9/13/2001] Some claim that these witness accounts support the idea that Flight 93 is hit by a missile. [Philadelphia Daily News, 11/15/2001] While this theory certainly can be disputed, it is worth noting that some passenger planes hit by missiles continued to fly erratically for several minutes before crashing. For instance, a Korean Airline 747 was hit by two Russian missiles in 1983, yet continued to fly for two more minutes. [Korean Air, 8/31/1983] Kelly Leverknight, whose home is a couple of miles from the Flight 93 crash site, adds that planes going overhead are nothing unusual here because the area is a “military flight corridor.” [Daily American, 9/12/2001]

Shortly after 9/11, the North American Aerospace Defense Command (NORAD) will say the nearest fighter jets to Flight 93 at the time it crashes are the F-16s from Langley Air Force Base that are flying a combat air patrol over Washington, DC (see (Between 9:49 a.m. and 11:00 a.m.) September 11, 2001). [North American Aerospace Defense Command, 9/18/2001; 9/11 Commission, 8/26/2004, pp. 34 ] Other accounts will conflict over whether or not there are any fighter jets near Flight 93 when it goes down:
Two days after the attacks, it will be reported that an unnamed New England air traffic controller has ignored a ban on controllers speaking to the media, and this controller claims “that an F-16 fighter closely pursued Flight 93.… [T]he F-16 made 360-degree turns to remain close to the commercial jet.” The controller adds that the fighter pilot “must’ve seen the whole thing.” He reportedly learned this from speaking to controllers who were closer to the crash. [Telegraph (Nashua), 9/12/2001; Associated Press, 9/13/2001]
Five days after the attacks, on September 16, CBS News will report that two F-16s are tailing Flight 93 and are within 60 miles of it when it goes down. [CBS News, 9/16/2001; Independent, 8/13/2002]
But, also on September 16, Major General Paul Weaver, the director of the Air National Guard, will say that no military planes were sent after Flight 93. [Seattle Times, 9/16/2001]
In April 2002, Anthony Kuczynski will tell the University of St. Thomas’s weekly newspaper that he had flown toward Pittsburgh alongside two F-16s on 9/11. He says he was piloting an E-3 Sentry AWACS plane, which has advanced radar and surveillance equipment that can be used to direct fighter jets to their targets. He was just about to intercept Flight 93 when it crashed. He says, “I was given direct orders to shoot down an airliner.” (E-3s are unarmed, so, if this account is accurate, the order presumably applied to the fighters Kuczynski was accompanying.) [St. Thomas Aquin, 4/12/2002; US Air Force, 11/20/2009]
A year after the attacks, ABC News will report that the “closest fighters” to Flight 93 when it crashes “are two F-16 pilots on a training mission from Selfridge Air National Guard Base” near Detroit, Michigan. These are ordered after Flight 93, according to some accounts, even though they are unarmed. [ABC News, 8/30/2002; ABC News, 9/11/2002] However, other accounts will state that these jets are in fact ordered to intercept another aircraft, Delta 1989, or are simply told to return to their base (see (9:55 a.m.) September 11, 2001 and (9:56 a.m.-10:29 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 28; Mount Clemens-Clinton-Harrison Journal, 9/6/2006; Spencer, 2008, pp. 178]
Stacey Taylor, an air traffic controller at the FAA’s Cleveland Center, will claim not to have seen any fighter jets on radar around the area of the crash. [MSNBC, 9/11/2002]
Five years after 9/11, Bill Keaton, a Cleveland Center controller who tracked Flight 93 as it flew eastward (see (9:41 a.m.-10:06 a.m.) September 11, 2001), will be asked whether there were fighter jets in the vicinity of the plane when it crashed. He will reply, “[T]hat goes beyond the scope of what I can comment on.” (Air traffic controllers reportedly can lose their security clearances if they discuss the movements of military aircraft.) [Cleveland Free Times, 9/6/2006]

Flight 93 apparently starts to break up before it crashes, because debris is found very far away from the crash site. [Philadelphia Daily News, 11/15/2001] The plane is generally obliterated upon landing, except for one half-ton piece of engine found some distance away. Some reports indicate that the engine piece was found over a mile away. [Independent, 8/13/2002] The FBI reportedly acknowledges that this piece was found “a considerable distance” from the crash site. [Philadelphia Daily News, 11/15/2001] Later, the FBI will cordon off a three-mile wide area around the crash, as well as another area six to eight miles from the initial crash site. [CNN, 9/13/2001] One story calls what happened to this engine “intriguing, because the heat-seeking, air-to-air Sidewinder missiles aboard an F-16 would likely target one of the Boeing 757’s two large engines.” [Philadelphia Daily News, 11/15/2001] Smaller debris fields are also found two, three, and eight miles away from the main crash site. [Independent, 8/13/2002; Mirror, 9/12/2002] Eight miles away, local media quote residents speaking of a second plane in the area and burning debris falling from the sky. [Reuters, 9/13/2001] Residents outside Shanksville reported “discovering clothing, books, papers, and what appeared to be human remains. Some residents said they collected bags-full of items to be turned over to investigators. Others reported what appeared to be crash debris floating in Indian Lake, nearly six miles from the immediate crash scene. Workers at Indian Lake Marina said that they saw a cloud of confetti-like debris descend on the lake and nearby farms minutes after hearing the explosion…” [Pittsburgh Post-Gazette, 9/13/2001] Moments after the crash, Carol Delasko initially thinks someone had blown up a boat on Indian Lake: “It just looked like confetti raining down all over the air above the lake.” [Pittsburgh Tribune-Review, 9/14/2001] Investigators say that far-off wreckage “probably was spread by the cloud created when the plane crashed and dispersed by a ten mph southeasterly wind.” [News Journal (Wilmington, DE), 9/16/2001] However, much of the wreckage is found sooner than that wind could have carried it, and not always southeast.

The military liaison at the FAA’s Cleveland Center calls NORAD’s Northeast Air Defense Sector (NEADS) and alerts it to the hijacked Flight 93. According to the 9/11 Commission, this is the first notification NEADS receives about Flight 93, but it comes too late, since the plane has already crashed (see (10:06 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 30; 9/11 Commission, 8/26/2004, pp. 46 ]
'Bomb on Board' Flight 93 - At 10:05 a.m., the military liaison at the Cleveland Center, who is unaware that Flight 93 has just crashed, calls NEADS to inform it that Flight 93 is heading toward Washington, DC. Even though communicating with NEADS is not one of his responsibilities, he wants to make sure it is in the loop. [Spencer, 2008, pp. 224] At NEADS, the call is answered by Tech Sergeant Shelley Watson. Shortly into the call, at 10:07, the military liaison tells her: “We got a United 93 out here. Are you aware of that?” He continues, “That has a bomb on board.” Watson asks: “A bomb on board? And this is confirmed? You have a mode three [beacon code], sir?” The military liaison replies, “No, we lost his transponder” (see (9:40 a.m.) September 11, 2001). The news about Flight 93 is shouted out to Major Kevin Nasypany, the NEADS mission crew commander. Nasypany responds: “Gimme the call sign. Gimme the whole nine yards.… Let’s get some info, real quick. They got a bomb?”
Liaison Wants Fighters Sent toward Flight 93 - The military liaison continues, asking Watson if NEADS scrambled fighter jets in response to Delta 1989, an aircraft that was mistakenly reported as having been hijacked (see (9:28 a.m.-9:33 a.m.) September 11, 2001 and 9:39 a.m. September 11, 2001). Watson replies: “We did. Out of Selfridge and Toledo” (see (9:55 a.m.) September 11, 2001 and 10:01 a.m. September 11, 2001), and says these jets are airborne. When the military liaison asks if the fighters can be directed to where Flight 93 is, Watson asks him if the Cleveland Center has latitude and longitude coordinates for this aircraft. The military liaison replies that he has not got this information available right now. All he knows is that Flight 93 has “got a confirmed bomb on board… and right now, his last known position was in the Westmoreland area.… Which is… in the Pittsburgh, Pennsylvania, area.” [North American Aerospace Defense Command, 9/11/2001; Vanity Fair, 8/1/2006]
NEADS Searches on Radar - The news of a bomb on board Flight 93 spreads quickly at NEADS, and personnel there search for the aircraft’s primary return on their radar screens. But because the plane has already crashed, they will be unable to locate it. NEADS will only learn that Flight 93 has crashed at 10:15 a.m., during a call with the FAA’s Washington Center (see 10:15 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 30-31]
FAA Failed to Notify Military Earlier - The Cleveland Center’s notification to NEADS about Flight 93 comes 39 minutes after the plane was hijacked (see (9:28 a.m.) September 11, 2001) and 33 minutes after FAA headquarters was alerted to the hijacking (see 9:34 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 11, 28] At the time NEADS is alerted to Flight 93, NORAD is similarly uninformed about this aircraft, according to the 9/11 Commission. The Commission will state, “At 10:07, its representative on the air threat conference call stated that NORAD had ‘no indication of a hijack heading to DC at this time.’” According to the Commission, the National Military Command Center (NMCC) at the Pentagon learned about the Flight 93 hijacking slightly earlier on, at 10:03 a.m. (see 10:03 a.m. September 11, 2001). However, the NMCC was notified by the White House, not the FAA. [9/11 Commission, 7/24/2004, pp. 42] A former senior FAA executive, speaking on condition of anonymity, will later try to explain why it takes the FAA so long to alert NEADS to Flight 93. He will say, “Our whole procedures prior to 9/11 were that you turned everything [regarding a hijacking] over to the FBI.” [Vanity Fair, 8/1/2006] Yet military instructions contradict this, stating, “In the event of a hijacking, the NMCC will be notified by the most expeditious means by the FAA.” [US Department of Defense, 7/31/1997 ; US Department of Defense, 6/1/2001 ]
NORAD Commanders Claim Earlier Awareness of Flight 93 - Two senior NORAD officials will contradict the 9/11 Commission’s conclusion, and claim they were aware of Flight 93 well before it crashed (see Shortly Before 9:36 a.m. September 11, 2001 and (9:36 a.m.-10:06 a.m.) September 11, 2001). [Filson, 2003, pp. 68, 71-73] Colonel Robert Marr, the NEADS battle commander, will tell the Commission that, while the flight was still airborne, “his focus was on UAL 93, which was circling over Chicago,” and he “distinctly remembers watching the flight UAL 93 come west, and turn over Cleveland.” [9/11 Commission, 10/27/2003 ; 9/11 Commission, 1/23/2004 ] Major General Larry Arnold, the commander of the Continental US NORAD Region, will recall, “[W]e watched the [Flight] 93 track as it meandered around the Ohio-Pennsylvania area and started to turn south toward DC.” [Filson, 2003, pp. 71]

The air traffic control tower at Andrews Air Force Base, near Washington, DC, broadcasts regular warnings over radio that any aircraft entering the restricted airspace around the capital will be shot down, even though, according to the 9/11 Commission, the president does not authorize the shooting down of threatening aircraft until 10:18 a.m. [9/11 Commission, 2004; 9/11 Commission, 2/17/2004; 9/11 Commission, 3/11/2004 ; 9/11 Commission, 7/24/2004, pp. 41] The Andrews control tower begins broadcasting warning messages over the Air Traffic Information System (ATIS) at 10:05 a.m. [9/11 Commission, 3/11/2004 ] The ATIS is an automatic information system over which “[p]re-recorded airfield advisory information is automatically transmitted at timed intervals over the airways on a specific frequency.” [US Air Force, 10/1/1999 ]
Planes Told They Could Be 'Shot Down' - A 9/11 Commission document summarizing key transmissions from the Andrews tower will show that warning messages are broadcast about once or twice every 10 minutes. The messages, which are all quite similar, include: “No fly notice. Remain clear of Andrews Class B airspace or you will be shot down,” and, “Any aircraft monitoring Andrews Approach Control frequency: remain clear of Andrews Class B airspace or you will be shot down.” [9/11 Commission, 2/17/2004] (Class B airspace is restricted airspace in which no one is supposed to fly without a working transponder and permission from an air traffic controller. The airspace around much of Washington is designated Class B airspace. [Washington Post, 9/12/2001; New York Times, 9/29/2001] )
Fighter Pilots Hear Warning - At least one of the warning messages is heard by District of Columbia Air National Guard (DCANG) fighter pilots who launch from Andrews Air Force Base at 10:42 a.m. (see 10:42 a.m. September 11, 2001) and by pilots launched from Langley Air Force Base by NORAD’s Northeast Air Defense Sector (NEADS) earlier on (see (9:25 a.m.-9:30 a.m.) September 11, 2001). DCANG pilots Marc Sasseville and Heather Penney Garcia are flying at low altitude over Washington, while the three Langley pilots are above them at around 20,000 feet. Although they are on different radio frequencies, both sets of pilots hear a message over a shared channel: “Attention all aircraft monitoring Andrews tower frequency. Andrews and Class Bravo airspace is closed. No general aviation aircraft are permitted to enter Class Bravo airspace. Any infractions will be shot down.” [Filson, 2003, pp. 82]
Officers Hear Warning - The warning messages are also heard by DCANG officers at Andrews. After hearing that violators of the Washington airspace will be shot down, Brigadier General David Wherley thinks to himself, “I guess that will be us doing the shooting.” [Washington Post, 4/8/2002; Vogel, 2007, pp. 446] Apparently referring to the warnings from the Andrews tower, Lieutenant Colonel Phil Thompson will later recall: “We kind of winced at that, because there are plenty of hard reasons to not shoot somebody down. We were really in an ID posture—and trying to really be careful.” [Aviation Week and Space Technology, 9/9/2002]
Shootdown Not Authorized until 10:18 - Although the first of the warnings is broadcast at 10:05 a.m., President Bush only gives authorization for hostile aircraft to be shot down at 10:18 a.m., according to the 9/11 Commission, in a phone call with Vice President Dick Cheney (see 10:18 a.m.-10:20 a.m. September 11, 2001). Furthermore, NEADS only learns that NORAD has been given clearance to shoot down threatening aircraft at 10:31 a.m. (see 10:31 a.m. September 11, 2001). The 9/11 Commission document of Andrews tower transmissions will show that the warnings are broadcast until at least 11:05 a.m., although presumably they continue after that. [9/11 Commission, 2/17/2004; 9/11 Commission, 7/24/2004, pp. 41-42]

John Fleegle, a manager at the Indian Lake Marina about 1.5 miles from where Flight 93 crashes, is indoors with some colleagues, watching the televised coverage of the World Trade Center attack. Then, as he later describes, “All of a sudden the lights flickered and we joked that maybe they were coming for us. Then we heard engines screaming close overhead. The building shook. We ran out, heard the explosion and saw a fireball mushroom,” following the crash. When he later describes this incident while on a training course in Atlanta, Fleegle will be told that what happened means Flight 93 “was shot down.” A man there who says he is a retired Air Force officer will tell Fleegle, “[W]hen your lights flickered, [it was because] they zap the radar frequency on everything before they shoot. Your lights didn’t flicker from the impact—your lights flickered because they zapped the radar system before they shot it.” However, William “Buck” Kernan, a retired four-star Army general, will dispute this claim, saying, “[R]egarding an aircraft engaging an airborne target having an electrical disruption on the ground, no, this would not be a result of lock on or any electromagnetic pulsing.” He will suggest it is “possible that overpressure from explosions could momentarily disrupt microwave connections or cause sensations on ground relays, wiring, etc.” that might result in the lights having flickered. [Pittsburgh Tribune-Review, 9/14/2001; Lappe and Marshall, 2004, pp. 35-36] But, consistent with Fleegle’s allegation, a number of local residents—including military veterans—say they heard the sound of a missile overhead just before the time of the crash (see Just Before 10:06 a.m. September 11, 2001). Another local resident, Val McClatchey, will report her lights and phone going out around the time of the crash. [Pittsburgh Tribune-Review, 9/11/2002] According to Barry Lichty, the mayor of Indian Lake Borough, the town’s electricity goes out around this time. He later learns that the plane crash had disrupted service to the borough. [Pittsburgh Tribune-Review, 9/12/2001] Interestingly, one alternative theory later suggested is that Flight 93 could have been brought down using “electromagnetic interference” (see August 13, 2002). The US Air Force and Pentagon have in fact “conducted extensive research on ‘electronic warfare applications’ with the possible capacity intentionally to disrupt the mechanisms of an airplane in such a way as to provoke, for example, an uncontrollable dive.” [Independent, 8/13/2002]

The military liaison at the FAA’s Cleveland Center is informed that Flight 93 has been hijacked and is given information about its location. It is unclear when the liaison first receives this information, but it must happen before 10:07, as he telephones NORAD’s Northeast Air Defense Sector (NEADS) at this time to pass on the information (see 10:05 a.m.-10:08 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 30] Military liaison officers at the FAA’s Command Center are also said to be informed of the hijacking of Flight 93 (see After 9:34 a.m. September 11, 2001).

Flight 93 crashed in the Pennsylvania countryside. Resue vehicles arrive in the distance. [Source: Keith Srakocic/ Associated Press]Flight 93 crashes into an empty field just north of the Somerset County Airport, about 80 miles southeast of Pittsburgh, 124 miles or 15 minutes from Washington, D.C. Presumably, hijackers Ziad Jarrah, Ahmed Alhaznawi, Ahmed Alnami, Saeed Alghamdi, and all the plane’s passengers are killed instantly. [CNN, 9/12/2001; North American Aerospace Defense Command, 9/18/2001; Guardian, 10/17/2001; Pittsburgh Post-Gazette, 10/28/2001; USA Today, 8/13/2002; Associated Press, 8/21/2002; MSNBC, 9/3/2002] The point of impact is a reclaimed coal mine, known locally as the Diamond T Mine, that was reportedly abandoned in 1996. [Pittsburgh Tribune-Review, 9/12/2001; St. Petersburg Times, 9/12/2001; Pittsburgh Tribune-Review, 9/11/2002] Being “reclaimed” means the earth had been excavated down to the coal seam, the coal removed, and then the earth replaced and planted over. [Kashurba, 2002, pp. 121] A US Army authorized seismic study times the crash at five seconds after 10:06 a.m. [Kim and Baum, 2002 ; San Francisco Chronicle, 12/9/2002] As mentioned previously, the timing of this crash is disputed and it may well occur at 10:03 a.m., 10:07 a.m., or 10:10 a.m.

Looking straight down onto the Flight 93 crash site. North is to the top. Note the impact point north of the road, and the burned trees to the south of it. [Source: FBI]A second plane, described “as a small, white jet with rear engines and no discernible markings,” is seen by at least ten witnesses flying low and in erratic patterns, not much above treetop level, over the crash site within minutes of United Flight 93 crashing. [Independent, 8/13/2002]
Lee Purbaugh: “I didn’t get a good look but it was white and it circled the area about twice and then it flew off over the horizon.” [Mirror, 9/12/2002]
Susan Mcelwain: Less than a minute before the Flight 93 crash rocked the countryside, she sees a small white jet with rear engines and no discernible markings swoop low over her minivan near an intersection and disappear over a hilltop, nearly clipping the tops of trees lining the ridge. [Bergen Record, 9/14/2001] She later adds, “There’s no way I imagined this plane—it was so low it was virtually on top of me. It was white with no markings but it was definitely military, it just had that look. It had two rear engines, a big fin on the back like a spoiler on the back of a car and with two upright fins at the side. I haven’t found one like it on the Internet. It definitely wasn’t one of those executive jets. The FBI came and talked to me and said there was no plane around.… But I saw it and it was there before the crash and it was 40 feet above my head. They did not want my story—nobody here did.” [Mirror, 9/12/2002]
John Fleegle and two work colleagues arrive at the crash site “before any fireman or paramedics or anybody.” According to Fleegle, “When we got there, there was a plane flying up above and he was smart, he flew straight for the sun so you couldn’t look at it and see exactly what type of plane, if it was a fighter or what it was.” However, Fleegle claims the plane “was decent sized. It wasn’t just a little private jet or something like that, from what we could see.” [Lappe and Marshall, 2004, pp. 35-36]
Dennis Decker and/or Rick Chaney, say: “As soon as we looked up [after hearing the Flight 93 crash], we saw a midsized jet flying low and fast. It appeared to make a loop or part of a circle, and then it turned fast and headed out.” Decker and Chaney described the plane as a Learjet type, with engines mounted near the tail and painted white with no identifying markings. “It was a jet plane, and it had to be flying real close when that 757 went down. If I was the FBI, I’d find out who was driving that plane.” [Bergen Record, 9/14/2001]
Kathy Blades, who is staying about quarter of a mile from the impact site, runs outside after the crash and sees a jet, “with sleek back wings and an angled cockpit,” race overhead. [Philadelphia Daily News, 11/18/2001]
Anna Ruth Fisher says, “After the crash, another jet went near over to look.” Her mother, Anna B. Fisher, adds, “We were looking at the smoke cloud when we saw the jets circling up there.” [Kashurba, 2002, pp. 27]
Jim Brandt sees a small plane with no markings stay about one or two minutes over the crash site before leaving. [Pittsburgh Channel, 9/12/2001]
Bob Page sees a large plane circling the crash site for about two or three minutes, before climbing almost vertically into the sky. He cannot see what kind of plane it is or if there are any markings on it, but says, “It sure wasn’t no puddle jumper.” [Pittsburgh Tribune-Review, 9/12/2001]
Tom Spinelli: “I saw the white plane. It was flying around all over the place like it was looking for something. I saw it before and after the crash.” [Mirror, 9/12/2002]
The FBI later claims this was a Fairchild Falcon 20 business jet, directed after the crash to fly from 37,000 feet to 5,000 feet and obtain the coordinates for the crash site to help rescuers (see 10:07 a.m. September 11, 2001). [Pittsburgh Channel, 9/15/2001; Pittsburgh Post-Gazette, 9/16/2001] The FBI also says there was a C-130 military cargo aircraft flying at 24,000 feet about 17 miles away (see 10:08 a.m. September 11, 2001), but that plane wasn’t armed and had no role in the crash. [Pittsburgh Channel, 9/15/2001; Pittsburgh Post-Gazette, 9/16/2001] Note that this is the same C-130 that flies very close to Flight 77 right as that planes crashes into the Pentagon (see 9.36 a.m. September 11, 2001).

Tape recordings of the operations floor at NORAD’s Northeast Air Defense Sector (NEADS) indicate that some military personnel are uncertain whether a training exercise that was being conducted on this day has been canceled. NEADS has been participating in a major exercise called Vigilant Guardian. [Newhouse News Service, 1/25/2002] This was reportedly called off “shortly after” the second WTC tower was hit at 9:03 (see (Shortly After 9:03 a.m.) September 11, 2001). [Airman, 3/2002] But at 10:06, someone calls NEADS and asks, “Is the exercise knocked off?” to which they are told, “Yes.” Two minutes later, a member of the NEADS staff is heard saying, “If this is an exercise input, this is a good one.” [North American Aerospace Defense Command, 9/11/2001] It is around this time that NEADS is first alerted to Flight 93 (although this plane has already crashed) (see 10:05 a.m.-10:08 a.m. September 11, 2001) and also hears a report of an unidentified aircraft over the White House (see 10:07 a.m. September 11, 2001). So presumably it is one of these incidents that is considered a possible “exercise input,” meaning a simulated scenario. [Vanity Fair, 8/1/2006]

The local structure most severely damaged when Flight 93 crashes in rural Pennsylvania is a stone cottage, an estimated 1,000 feet from the crash site. Located within thick trees, the cottage belongs to Barry Hoover who is away at work at the time of the crash. Reportedly, “every window and door” has been “blown off and obliterated, its ceilings and floor tiles had been blasted loose and much of the interior was wrecked.” Hoover describes it as “like what you see after a tornado or hurricane goes through—a total ruin.” The garage adjacent to it has its door blown off by the shockwave from the crash. According to Somerset County Solicitor Dan Rullo, “The way it was described to me was that it must have been blown up, the springs snapped, and it came back upside down.” The surrounding area is scattered with remains and debris. [Pittsburgh Post-Gazette, 9/14/2001; Kashurba, 2002, pp. 122; Washington Post, 5/12/2002 ]

A local resident is able to take the only photo showing the Flight 93 crash in the seconds after the plane went down. Val McClatchey lives just over a mile away from the crash site. [Wall Street Journal, 9/12/2006] She is at home watching television when she hears the surge of a plane engine, sees a silver flash outside, and then hears a loud boom that causes her house to shake. Luckily she has her new digital camera ready by her door. She was planning to photograph a friend who had promised to fly over in a helicopter on this day. [Pittsburgh Post-Gazette, 6/29/2003; Pittsburgh Post-Gazette, 8/6/2006; Tribune-Democrat (Johnstown), 9/9/2006] She grabs it and from her front porch manages to take a picture of the smoke cloud rising into the sky, “approximately five seconds after impact,” she says. [Pittsburgh Tribune-Review, 9/11/2002; Windsor Park Stories, 3/23/2003] Her photo will appear in numerous newspapers and magazines. According to the FBI, it is the only known image taken within seconds of the crash. Considering the sparsely populated area in which Flight 93 went down, Pittsburgh FBI agent Jeff Killeen calls it “one-of-a-kind.” [Pittsburgh Post-Gazette, 8/6/2006; Tribune-Democrat (Johnstown), 9/9/2006; Wall Street Journal, 9/12/2006]

Soon after Flight 93 has crashed, Sherry Stalley, who is a reporter with a Johnstown, Pennsylvania, television station, is traveling in a car and hears a dispatch over the scanner (a type of radio receiver used by reporters), reporting that apparently another plane, possibly with a bomb onboard, is heading towards the Johnstown airport (located about 14 miles north of the Flight 93 crash site). According to Stalley, “The scanner was jammed with talk. Emergency crews and firefighters were being sent to the airport. Police were being dispatched to shut down roads. Every available unit within a thirty-mile radius was asked to help.” [Gilbert et al., 2002, pp. 111] The control tower at the Johnstown airport was evacuated at around 10 a.m., following reports of a suspect aircraft heading towards it (see (Between 9:40 and 10:00 a.m.) September 11, 2001).

At some point after Flight 93 crashes, NORAD diverts “unarmed Michigan Air National Guard fighter jets that happened to be flying a training mission in northern Michigan since the time of the first attack.” [Associated Press, 8/30/2002] The 9/11 Commission concludes these fighters and fighters from Ohio are scrambled for Delta Flight 1989, a flight that was never hijacked or even out of contact. Meanwhile, reportedly, no fighters are scrambled after Flight 93 at all, which has already crashed. [9/11 Commission, 6/17/2004]

“Up above, a fighter jet streak[s] by,” just after Flight 93 crashes, according to ABC News. [ABC News, 9/15/2002] It isn’t clear what evidence this ABC News claim is based on. There are other accounts of a fighter or fighters in the area before the crash, mentioned previously.

Paper debris found in New Baltimore, six miles from the crash site. [Source: Steve Mellon / Pittsburgh Post-Gazette] (click image to enlarge)Despite the apparent lack of plane wreckage and human remains at the Flight 93 crash site (see (After 10:06 a.m.) September 11, 2001 and 10:45 a.m. September 11, 2001), a large amount of paper debris is found there, mostly intact. Faye Hahn, an EMT who responds to the initial call for help, finds “pieces of mail” everywhere. [McCall, 2002, pp. 31-32] Roger Bailey of the Somerset Volunteer Fire Department finds mail “scattered everywhere” around the site. He says, “I guess there were 5,000 pounds of mail on board.” [Kashurba, 2002, pp. 38] Some envelopes are burned, but others are undamaged. Flight 93 had reportedly been carrying a cargo of thousands of pounds of US mail. [Longman, 2002, pp. 213-214] Whether this is later examined as crime scene evidence is unclear: According to Bailey, over subsequent days, whenever a lot of this mail has been recovered, the post office will be called and a truck will come to take it away. Several of the first responders at the crash site also see an unscorched bible lying open on the ground, about 15 yards from the crash crater. [Kashurba, 2002, pp. 43, 110 and 129; Arkansas Democrat-Gazette, 6/13/2006] Local coroner Wallace Miller will later come across a second bible at the warehouse where the Flight 93 victims’ belongings are kept. [Washington Post, 5/12/2002 ] Other paper debris rains down on the nearby Indian Lake Marina (see (Before 10:06 a.m.) September 11, 2001). According to witness Tom Spinelli, this is “mainly mail,” and also includes “bits of in-flight magazine.” [Mirror, 9/12/2002] Other paper items will be recovered from the crash site in the following days. These include a fragment of Ziad Jarrah’s passport and a business card linking al-Qaeda conspirator Zacarias Moussaoui to the 9/11 hijackers. [CNN, 8/1/2002; Washington Post, 9/25/2002] A flight crew log book and an in-flight manual belonging to Lorraine Bay, a flight attendant on Flight 93, will also be recovered. [National Museum of American History, 9/20/2003]

Counterterrorism “tsar” Richard Clarke is told by White House Situation Room Deputy Director Ralph Seigler, “Secret Service reports a hostile aircraft ten minutes out.” Two minutes later, he is given an update: “Hostile aircraft eight minutes out.” In actual fact, when Flight 93 crashed at 10:06 a.m., it was still about 15 minutes away from Washington. Clarke is also told that there are 3,900 aircraft still in the air over the continental US (which is roughly accurate); four of those aircraft are believed to be piloted by terrorists (which is inaccurate by this time). Joint Chiefs of Staff Vice Chairman Richard Myers then reports: “We have three F-16s from Langley over the Pentagon. Andrews is launching fighters from the DC Air National Guard. We have fighters aloft from the Michigan Air National Guard, moving east toward a potential hostile over Pennsylvania. Six fighters from Tyndall and Ellington are en route to rendezvous with Air Force One over Florida. They will escort it to Barksdale.” [North American Aerospace Defense Command, 9/18/2001; Clarke, 2004, pp. 8-9] However, fighters do not meet up with Air Force One until about an hour later (see (11:29 a.m.) September 11, 2001). Franklin Miller, a senior national security official who is working alongside Clarke on 9/11, and another official who is also in the Situation Room, will later fail to recall hearing any warning that a plane could be only minutes away. [New York Times, 3/30/2004] The time of this incident is unstated, but the Michigan fighters are not diverted until after 10:06 a.m. (see (After 10:06 a.m.) September 11, 2001). If it takes place after 10:06 a.m., this would parallel similar warnings about Flight 93 after it has already crashed provided to Vice President Dick Cheney elsewhere in the White House (see (Between 10:10 a.m. and 10:15 a.m.) September 11, 2001).

Falcon 20 business jet. [Source: Portuguese Air Force]According to some accounts, following a request from the FAA’s Cleveland Center, a Fairchild Falcon 20 business jet reports seeing puffs of smoke in the area of Flight 93’s last known position. [Pittsburgh Post-Gazette, 9/16/2001; Federal Aviation Administration, 9/17/2001 ] The FBI later says the business jet was within 20 miles of Flight 93 when it crashed, at an altitude of 37,000 feet, and on its way to Johnstown. It was asked to descend to 5,000 feet to help locate the crash site for the benefit of the responding emergency crews. [Pittsburgh Channel, 9/15/2001] Stacey Taylor appears to be the Cleveland Center controller who made the request. She later recalls: “I had another airplane [other than Flight 93] that I was working. And I told him, I said, ‘Sir,’ I said, ‘I think we have an aircraft down.’ I said, ‘This is entirely up to you, but if you’d be willing to fly over the last place that we spotted this airplane—and see if you can see anything.‘… So he flew over and at first he didn’t see anything and then he said, ‘We see a great big plume or a cloud of smoke.’” [MSNBC, 9/9/2006] The business jet belongs to VF Corp, a Greensboro, North Carolina clothing firm. [Pittsburgh Post-Gazette, 9/16/2001] According to David Newell, VF Corp’s director of aviation and travel, Cleveland Center contacted the plane’s copilot Yates Gladwell when it was at an altitude “in the neighborhood of 3,000 to 4,000 ft,” rather than 37,000 feet, as claimed by the FBI. He will add: “They got down within 1,500 ft. of the ground when they circled. They saw a hole in the ground with smoke coming out of it. They pinpointed the location and then continued on.” [Popular Mechanics, 3/2005] This incident occurs around 40 minutes after the FAA initiated a nationwide ground stop, which required planes in the air to land as soon as reasonable (see (9:26 a.m.) September 11, 2001). [Time, 9/14/2001; 9/11 Commission, 7/24/2004, pp. 25] The FBI will claim the VF Corp business jet is probably the plane some witnesses on the ground see up above, shortly after the crash of Flight 93 (see (Before and After 10:06 a.m.) September 11, 2001). [Pittsburgh Channel, 9/15/2001] However, at least two witnesses say they saw a plane overhead even before the time of the Flight 93 crash, and one of them describes it as “definitely military,” rather than a business jet. Also, some will describe it as flying much lower than the Falcon 20 was—just “40 feet above my head,” according to one witness. [Bergen Record, 9/14/2001; Mirror, 9/12/2002]

The FAA’s Cleveland Center receives a number of bomb threats. The Cleveland Center, which had the last contact with Flight 93 before it crashed, receives the first of these bomb threats at 10:07 a.m., according to an FAA report published in 2002. Then, at 10:17 a.m., the report will state, the center says over an FAA teleconference that it is “receiving a bomb threat,” although it is unclear if this is a second threat or a reference to the earlier one. At 10:21 a.m., the center reports over the teleconference that it has received “two more” bomb threats. [Federal Aviation Administration, 3/21/2002, pp. S-17, S-19 ] The Cleveland Center will subsequently be searched and found to be secure. It is unclear whether the search is made in response to the bomb threats. [Federal Aviation Administration, 9/19/2001, pp. 6-7 ] Newsweek will later report, “Officials suspect that the bomb threats [on September 11] were intended to add to the chaos, distracting controllers from tracking the hijacked planes.” [Newsweek, 9/22/2001] However, the Washington Post will subsequently state that according to FAA officials, “reports of multiple threats were apparently the result of confusion during the early hours of the investigation and miscommunication in the Federal Aviation Administration.” [Washington Post, 9/27/2001 ] The Cleveland Center is evacuated at around 10:17 a.m. (see (10:17 a.m.) September 11, 2001), although this is in response to a report of a suspicious aircraft flying above it rather than the bomb threats. [Federal Aviation Administration, 3/21/2002, pp. S-19 ; Newsnet5, 8/12/2002; Associated Press, 8/15/2002]

At some unspecified time, apparently relatively soon after Flight 93 crashed, Vice President Dick Cheney calls CIA Director George Tenet and asks him if he is anticipating any further attacks. Tenet replies, “No. My judgment is that they’re done for the day.” Tenet will later explain his reasoning behind this judgment: “There was a lull in the action, and to me that was telling.… I had no data to go on. But the pattern of spectacular multiple attacks within a very tight attack window was consistent with what we knew of al-Qaeda’s modus operandi based on the East African embassy attacks and others. Events happened within a strict timeline, and then they were done.” Yet at 10 a.m., Tenet had wanted the CIA headquarters evacuated, following reports that several airplanes were not responding to communications and were perhaps heading toward Washington. A large number of the CIA’s workforce had therefore been sent home (see (9:50 a.m.-10:00 a.m.) September 11, 2001). [Tenet, 2007, pp. 164 and 167] And according to recordings of the operations floor at NORAD’s Northeast Air Defense Sector (NEADS) later obtained by Vanity Fair magazine, “inside NEADS there was no sense that the attack was over with the crash of United 93; instead, the alarms go on and on. False reports of hijackings, and real responses, continue well into the afternoon” (see 10:15 a.m. and After September 11, 2001). [Vanity Fair, 8/1/2006] Tenet and his staff will return to the CIA headquarters building at around 1 p.m. after having earlier evacuated to the CIA’s printing plant nearby. By that time, Tenet will say, “The danger was over for the day, in our estimation.” [Tenet, 2007, pp. 168]

At some unspecified time after when Flight 93 crashed, CIA Director George Tenet receives the passenger lists for the hijacked planes. He is currently in the CIA’s printing plant, after having evacuated the agency’s headquarters building (see (9:50 a.m.-10:00 a.m.) September 11, 2001). An analyst from the CIA’s Counterterrorist Center (CTC) has raced across to the plant with the list, and says, “Some of these guys on one of the planes are the ones we’ve been looking for in the last few weeks.” He specifically points at the names Khalid Almihdhar and Nawaf Alhazmi (two of the alleged Flight 77 hijackers). According to Tenet, this is “the first time we had absolute proof of what I had been virtually certain of from the moment I heard about the attacks: we were in the middle of an al-Qaeda plot.” Tenet will later say that after the CTC had first “requested passenger lists from the planes that had been turned into weapons that morning… the initial response from some parts of the bureaucracy (which parts since mercifully forgotten) was that the manifests could not be shared with CIA. There were privacy issues involved.” They were only obtained after some “gentle reasoning, and a few four-letter words.” [Tenet, 2007, pp. 167] The agency that provided these lists to the CTC may have been the Customs Office of Intelligence. According to Robert Bonner, the commissioner-designate of US Customs, “through an evaluation of data related to the passengers manifest for the four terrorist hijacked aircraft, Customs Office of Intelligence was able to identify the likely terrorist hijackers. Within 45 minutes of the attacks, Customs forwarded the passenger lists with the names of the victims and 19 probable hijackers to the FBI and the intelligence community” (see (11:00 a.m.) September 11, 2001). [9/11 Commission, 1/26/2004] Counterterrorism “tsar” Richard Clarke will claim he was told as early as 9:59 a.m. that the FBI had received the passenger manifests from the airlines (see (9:59 a.m.) September 11, 2001). [Clarke, 2004, pp. 13-14]

A helicopter flying above the burning World Trade Center. [Source: History Channel]Minutes after the collapse of the south WTC tower, police helicopters fly near the North Tower to check on its condition. The pilot of one helicopter radios, “About 15 floors down from the top, it looks like its glowing red,” and adds, “It’s inevitable.” Seconds later, another helicopter pilot reports, “I don’t think this has too much longer to go. I would evacuate all people within the area of that second building.” While these warnings are relayed to police officers, fire and rescue personnel do not hear them, as they operate on a different radio system. [New York Times, 7/7/2002; Inter Press Service, 8/25/2005; National Institute of Standards and Technology, 9/2005, pp. 224] The North Tower will collapse 21 minutes later (see 10:28 a.m. September 11, 2001).

The FAA’s Cleveland Center, which had the last contact with Flight 93 before it crashed, suggests that no distress signal indicating a plane crash has occurred was picked up at the time Flight 93 went down. [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 9/11/2001] Flight 93 reportedly crashed in rural Pennsylvania at 10:03 a.m. (see (10:03 a.m.-10:10 a.m.) September 11, 2001). [National Transportation Safety Board, 2/19/2002 ; 9/11 Commission, 7/24/2004, pp. 30; USA Today, 9/11/2008] An air traffic controller at the Cleveland Center now says, apparently over an FAA teleconference, that someone has reported seeing black smoke in the vicinity of Flight 93’s last known position, near Johnstown, Pennsylvania. The controller then says, “We’re trying to see if we can get an ELT check.” [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 9/11/2001] An “ELT” is an emergency locator transmitter, a device carried on most general aviation aircraft in the US that is designed to automatically start transmitting a distress signal if a plane should crash, so as to help search and rescue efforts in locating the downed aircraft. [Federal Aviation Administration, 3/23/1990; Federal Aviation Administration, 7/12/2001; Aircraft Owners and Pilots Association, 1/22/2009] The Cleveland Center controller’s information, as an FAA timeline will later state, therefore indicates that “[n]o ELT” signal has been picked up in the area where Flight 93 apparently crashed “at this time.” [Federal Aviation Administration, 9/11/2001] Someone at the FAA’s Command Center in Herndon, Virginia, acknowledges the controller’s communication, responding, “Copy that, Command Center.” [Federal Aviation Administration, 9/11/2001] Whether anyone will subsequently report picking up an ELT signal in the area where Flight 93 apparently crashed is unclear. Major Allan Knox, who works at the Air Force Rescue Coordination Center, which is “the contact for credible” ELT signals, will tell the 9/11 Commission that he “does not recall an ELT detection being brought to his attention” today. [9/11 Commission, 10/1/2003 ; 9/11 Commission, 10/6/2003 ] However, an ELT signal was picked up in the New York area by the pilot of an aircraft minutes before Flight 11 crashed into the North Tower of the World Trade Center (see 8:44 a.m. September 11, 2001) and another ELT signal was picked up in the New York area by the same pilot minutes before Flight 175 crashed into the South Tower (see 8:58 a.m. September 11, 2001). [Federal Aviation Administration, 9/11/2001 ; New York Times, 10/16/2001]

Hank Krakowski. [Source: Unisys]After seeing Flight 93’s radar track stopping over Pennsylvania, a senior United Airlines official contacts an airport in that area and receives confirmation of what appears to be an airplane crash nearby. Along with other United Airlines managers, Hank Krakowski, United’s director of flight operations, has just been watching Flight 93 on a large screen in the crisis center at the airline’s headquarters, outside Chicago (see (9:36 a.m.-10:06 a.m.) September 11, 2001). A dispatcher has determined the plane’s last position was south of Johnstown, Pennsylvania, so Krakowski tries phoning the Johnstown airport. However, due to an apparent power failure, there is no reply. He has to call the airport manager’s cell phone number. He asks the manager: “We might have a plane down in your area there. See anything unusual?” The manager reports a black smoke plume visible about 30 miles to the south of the airport. Krakowski thinks, “We just watched one of our airplanes crash.” [Longman, 2002, pp. 214; USA Today, 8/13/2002] Therefore, by 10:15 a.m. according to the 9/11 Commission, United Airlines headquarters has “confirmed that an aircraft [has] crashed near Johnstown, Pennsylvania, and [it] believed that this was Flight 93.” [9/11 Commission, 8/26/2004, pp. 47 ]

The Flight 93 crater later in the morning. Notice the destruction of the airplane is nearly total. [Source: Associated Press]Numerous individuals who see the Flight 93 crash site describe a lack of plane wreckage:
Jon Meyer, a reporter with WJAC-TV, says, “I was able to get right up to the edge of the crater.… All I saw was a crater filled with small, charred plane parts. Nothing that would even tell you that it was the plane.… There were no suitcases, no recognizable plane parts, no body parts. The crater was about 30 to 35 feet deep.” [Newseum et al., 2002, pp. 148]
According to Mark Stahl, who goes to the crash scene, “There’s a crater gouged in the earth, the plane is pretty much disintegrated. There’s nothing left but scorched trees.” [Associated Press, 9/11/2001]
Frank Monaco of the Pennsylvania State Police says, “If you would go down there, it would look like a trash heap. There’s nothing but tiny pieces of debris. It’s just littered with small pieces.” [Pittsburgh Post-Gazette, 9/12/2001]
Scott Spangler, a photographer with a local newspaper, says, “I didn’t think I was in the right place. I was looking for a wing or a tail. There was nothing, just this pit.… I was looking for anything that said tail, wing, plane, metal. There was nothing.” [Newseum et al., 2002, pp. 149]
According to Ron Delano, a local who rushes to the scene after hearing about the crash, “If they hadn’t told us a plane had wrecked, you wouldn’t have known. It looked like it hit and disintegrated.” [Pittsburgh Tribune-Review, 9/12/2001]
Gabrielle DeRose, a news anchor with KDKA-TV, views the crash site from a hill overlooking it. She says, “It was very disturbing to think all the remains just disintegrated…. There were no large pieces of airplane, no human remains, no baggage.” [Sylvester and Huffman, 2002, pp. 160-161]
Local assistant volunteer fire chief Rick King, who sees the crater at the crash site, says, “Never in my wildest dreams did I think half the plane was down there.” King sends his men into the woods to search for the plane’s fuselage, but they keep coming back and telling him, “Rick. There’s nothing.” [Longman, 2002, pp. 216]
Bob Craig of the FBI’s evidence-gathering team later explains what is supposed to have occurred: “Turn the picture of the second plane hitting the World Trade Center on its side, and, for all intents and purposes, the face of the building is the strip mine in Shanksville [where Flight 93 crashed].” [Longman, 2002, pp. 260] When the plane’s two black boxes are later discovered (see September 13-14, 2001), they are reportedly found 15 and 25 feet inside the crater. [Longman, 2002, pp. 217; Washington Post, 5/12/2002]

NEADS personnel who are on duty the morning of 9/11. [Source: Vanity Fair] (click image to enlarge)One of the pilots that took off from Langley Air Force Base (see (9:25 a.m.-9:30 a.m.) September 11, 2001) calls NORAD’s Northeast Air Defense Sector (NEADS) to relay information he has received about an aircraft over the White House, and is promptly instructed to intercept this aircraft. [Vanity Fair, 8/1/2006]
Borgstrom Wants Instructions - The three F-16s that took off from Langley Air Force Base are now flying in the Baltimore-Washington area. They have just heard a warning over the radio that errant aircraft will be shot down, and received an instruction from the Secret Service to protect the White House (see (10:00 a.m.) September 11, 2001). The FAA’s Washington Center also notified them of a suspicious aircraft flying at high speed toward the White House. In response, pilot Craig Borgstrom radios NEADS and asks weapons director Steve Citino for instructions on what to do. [Spencer, 2008, pp. 222-223] Borgstrom says: “Baltimore [the Washington Center] is saying something about an aircraft over the White House. Any words?” Citino replies: “Negative. Stand by,” and then relays Borgstrom’s message to Major James Fox, the leader of the NEADS weapons team. Fox then notifies Major Kevin Nasypany, the NEADS mission crew commander, of the aircraft over the White House.
Ordered to Intercept - Instinctively, Nasypany responds, “Intercept!” and he then elaborates, “Intercept and divert that aircraft away from there.” Citino passes this instruction to the Langley fighters, telling them their mission is to “intercept aircraft over White House. Use FAA for guidance.” Fox then adds: “Divert the aircraft away from the White House. Intercept and divert it.” Borgstrom confirms the order, saying, “Divert the aircraft.”
Unidentified Aircraft a False Alarm - As the F-16s head for the White House, the NEADS controllers are unable to find the building on their dated equipment, and also have trouble communicating with the Langley pilots. NEADS personnel speculate that the unidentified object is probably just a helicopter or smoke from the burning Pentagon. Minutes later, the suspect aircraft will be realized to probably be one of the Langley fighters, mistakenly reported by a Washington Center air traffic controller who was unaware of the military’s scrambles. Citino will comment: “That was cool. We intercepted our own guys.” [North American Aerospace Defense Command, 9/11/2001; Vanity Fair, 8/1/2006]

Wells Morrison is the supervisory special agent in charge of the FBI’s Mon Valley Resident Agency, a satellite of the bureau’s Pittsburgh field office. [Pittsburgh Tribune-Review, 4/13/2003] He receives a call informing him that a plane has crashed in Somerset County. Another phone call informs him that Westmoreland County 911 received a call saying a plane had been hijacked. (This is the call believed to have been from Flight 93 passenger Edward Felt (see 9:58 a.m. September 11, 2001).) He sends an agent out, who quickly seizes the tape of the call from the emergency dispatchers. Morrison also has agents sent to the Flight 93 crash site and subsequently goes there himself, being one of the first FBI agents to arrive at the scene. [Washington Post, 9/12/2001; Kashurba, 2002, pp. 109-110] Patrick Madigan of the Pennsylvania State Police, who arrives at the crash site around 10:20 a.m., says the first FBI agent gets there soon after him. Initially, four or five FBI agents will be there. [Department of the Army and the Air Force National Guard Bureau, 2002 ; Kashurba, 2002, pp. 60 and 110] In the subsequent days, about 150 agents will be involved in the recovery effort (see (September 11-27, 2001)). [Longman, 2002, pp. 259] As it is a crime scene, the FBI is in charge of the Flight 93 crash site and the subsequent investigation. [Pittsburgh Post-Gazette, 11/4/2001; Pittsburgh Post-Gazette, 2/17/2002]

Counterterrorism “tsar” Richard Clarke is told by an aide, “United 93 is down, crashed outside of Pittsburgh. It’s odd. Appears not to have hit anything much on the ground.” The timing of this event is unclear. [Clarke, 2004, pp. 14-15]

President Bush is told that Flight 93 crashed a few minutes after it happened, but the exact timing of this notice is unclear. Because of Vice President Cheney’s earlier order, he asks, “Did we shoot it down or did it crash?” Several hours later, he is assured that it crashed. [Washington Post, 1/27/2002]

According to Newsweek, “shortly after the suicide attacks,” US intelligence picks up communications among bin Laden associates relaying the message: “we’ve hit the targets.” [Newsweek, 9/13/2001]

Armed agents deploy around the White House. [CNN, 9/12/2001]

Lt. Col. Steve O’Brien standing in front of a C-130. [Source: CBC]Cleveland Center air traffic controller Stacey Taylor has asked a nearby C-130 pilot to look at Flight 93’s last position and see if he can find anything. Remarkably, this C-130 pilot, Lt. Col. Steve O’Brien, is the same pilot who was asked by air traffic control to observe Flight 77 as it crashed into the Pentagon earlier on (see 9.36 a.m. September 11, 2001). O’Brien tells Taylor that he saw smoke from the crash shortly after the hijacked plane went down. [Guardian, 10/17/2001; MSNBC, 9/11/2002; 9/11 Commission, 6/17/2004] An article in the London Independent will later suggest that Flight 93 might have been brought down by the US military using “electronic warfare applications” that can disrupt the mechanisms of an airplane (See August 13, 2002); it will refer to this C-130, since “in 1995 the Air Force installed ‘electronic suites’ in at least 28 of its C-130s—capable, among other things, of emitting lethal jamming signals.” [Independent, 8/13/2002]

According to the 9/11 Commission, the FAA Command Center reports to FAA headquarters at this time that Flight 93 has crashed in the Pennsylvania countryside. “It hit the ground. That’s what they’re speculating, that’s speculation only.” The Command Center confirms that Flight 93 crashed at 10:17 a.m. [Guardian, 10/17/2001; MSNBC, 9/11/2002; 9/11 Commission, 6/17/2004]

Two senior NORAD officials, Colonel Robert Marr and Major General Larry Arnold, have to address the possibility of issuing shootdown authorization to fighter jets under their command, after a report is received about an aircraft over the White House. [Spencer, 2008, pp. 224-225]
Aircraft over White House - Marr, the battle commander at NORAD’s Northeast Air Defense Sector (NEADS) in Rome, New York, is in the NEADS battle cab. On the NEADS operations floor, mission crew commander Major Kevin Nasypany has just learned of a report of an aircraft flying over the White House (see 10:07 a.m. September 11, 2001), and now talks to Marr over the phone. Nasypany asks: “Okay, did you hear that? Aircraft over the White House. What’s the word? Intercept and what else?” Marr has a phone to each ear and does not hear what Nasypany says. Nasypany therefore repeats, “Aircraft… over… the White House!” pausing on each word for emphasis. [Vanity Fair, 8/1/2006; Spencer, 2008, pp. 224]
Commanders Discuss Shootdown Order - The news of an aircraft over the White House forces Marr and Arnold, with whom he has been communicating, to address the issue of authorizing the shooting down of aircraft. [Spencer, 2008, pp. 225] Arnold, the commander of NORAD’s Continental US Region (CONR), is at the CONR air operations center at Tyndall Air Force Base in Florida. [Code One Magazine, 1/2002] According to author Lynn Spencer, he has not yet received any instructions from his higher-ups regarding shootdown authorization. “He talked to Major General Rick Findley,” who is at NORAD’s operations center in Colorado, “and asked him to get shootdown authority from the vice president, but he’s still heard nothing back.” [Spencer, 2008, pp. 225]
Arnold Possibly Authorizes Shootdown - Arnold will later tell author Leslie Filson that he has “the authority in case of an emergency to declare a target hostile and shoot it down under an emergency condition.” [Filson, 2003, pp. 75] But according to Vanity Fair, he only passes the current request for rules of engagement further up his chain of command. [Vanity Fair, 8/1/2006] However, Spencer will claim otherwise, stating, “In light of the imminent attack on the White House,” Arnold “decides he will exercise the authority he has to protect the nation in an emergency.” He tells Marr: “We will intercept and attempt to divert. If we can’t, then we’ll shoot it down.” [Spencer, 2008, pp. 225]
Alleged Shootdown Authorization Not Passed On - Minutes later, though, Nasypany will tell his staff that the pilots that took off from Langley Air Force Base (see (9:25 a.m.-9:30 a.m.) September 11, 2001) have “negative clearance to shoot” aircraft over Washington (see 10:10 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 31] And according to the 9/11 Commission, NEADS only learns that NORAD has been given clearance to shoot down threatening aircraft at 10:31 a.m., and even then it does not pass this order along to the fighter pilots under its command (see 10:31 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 42-43]

US military installations are placed on the highest state of alert, known as Force Protection Condition Delta (FPCON Delta), in response to the terrorist attacks in New York and at the Pentagon. The raised threat level applies to every US military installation across the country and around the world, and every member of the US armed forces. [Associated Press, 9/11/2001; US Department of Defense, 9/11/2001; New York Times, 9/12/2001] Measures that are taken once FPCON Delta has been declared include placing more guards on duty at installations, having all vehicles on installations identified, and having all personnel positively identified. Additionally, all suitcases, briefcases, and packages brought into an installation must be searched. [Slate, 9/12/2001]
Rumsfeld and Myers Decide to Raise FPCON - The decision to raise the force protection condition is apparently made by Secretary of Defense Donald Rumsfeld and/or acting Chairman of the Joint Chiefs of Staff Richard Myers. Rumsfeld will tell the 9/11 Commission that after he arrives at the Pentagon’s National Military Command Center (NMCC) (see (10:30 a.m.) September 11, 2001), he and Myers “discussed, and I recommended… increasing the force protection level.” [9/11 Commission, 3/23/2004] Myers will later write that after he arrives at the NMCC (see (Between 9:55 a.m. and 10:25 a.m.) September 11, 2001), he “recommended that all American military commands and units worldwide go to [FPCON] Delta.” He will add: “Terrorists had staged major attacks in New York and Washington. Although we did not yet have reliable intelligence on when and where they would strike next, it seemed likely that they would.” [Myers, 2009, pp. 153] But White House counterterrorism chief Richard Clarke will write that he gave the instruction to raise the force protection condition, at around 9:30 a.m. (see (9:29 a.m.) September 11, 2001). [Clarke, 2004, pp. 5-6]
Conflicting Times Given for Raising of FPCON - The exact time at which the force protection condition is raised is unclear. CNN’s Barbara Starr will report that “all US military forces [are] ordered to Condition Delta” at 10:10 a.m. [CNN, 9/4/2002] However, other evidence indicates the force protection condition is raised at a later time, around 10:35 a.m. Rumsfeld only enters the NMCC at about 10:30 a.m., indicating it is raised after that time. [9/11 Commission, 7/24/2004, pp. 43-44] And at 10:38 a.m., after Vice President Dick Cheney asks him on the air threat conference call if US forces are on “heightened alert,” Rumsfeld will reply, “Yes,” and say they are at FPCON Delta. [US Department of Defense, 9/11/2001 ]
Some Areas Already at FPCON Delta - Although the entire US military is now under the same FPCON level, usually, different locations can have different FPCON levels. [Slate, 9/12/2001] US forces in some parts of the world, particularly the Middle East and the Persian Gulf region, are in fact already at FPCON Delta. [New York Times, 9/12/2001] (The force protection condition was raised in those areas in late June, after intelligence reports suggested that terrorists might attack American military or civilian targets in the region (see June 21, 2001). [Los Angeles Times, 6/23/2001; National Public Radio, 5/23/2002; 9/11 Commission, 7/24/2004, pp. 257] ) Shortly after the force protection condition is raised, Rumsfeld will order that the defense readiness condition also be raised (see (10:43 a.m.-10:52 a.m.) September 11, 2001). [US Department of Defense, 9/11/2001 ; 9/11 Commission, 7/24/2004, pp. 326, 554]
Five Possible Force Protection Conditions - The force protection condition is a “chairman of the Joint Chiefs of Staff-approved standard for identification of, and recommended responses to, terrorist threats against US personnel and facilities,” according to the Department of Defense. [US Department of Defense, 11/8/2011 ] It was created in June 2001 and replaced the “terrorist threat condition,” or “Threatcon.” [Los Angeles Times, 1/22/2002] There are five possible force protection conditions. The lowest, FPCON Normal, means no threat of terrorist activity is present. The other conditions are Alpha, Bravo, Charlie, up to the highest, FPCON Delta, which means a terrorist attack has occurred or intelligence has been received indicating that action against a specific location is likely. [Associated Press, 9/11/2001; Slate, 9/12/2001]

Dick Cheney in the White House bunker, speaking to administration officials including (from left) Joshua Bolten, Karen Hughes, Mary Matalin (standing), Condoleezza Rice and I. Lewis ‘Scooter’ Libby. [Source: David Bohrer / White House] (click image to enlarge)The Secret Service, viewing projected path information about Flight 93, rather than actual radar returns, does not realize that Flight 93 has already crashed. Based on this erroneous information, a military aide tells Vice President Dick Cheney and others in the White House bunker that the plane is 80 miles away from Washington. Cheney is asked for authority to engage the plane, and he quickly provides it. The aide returns a few minutes later and says the plane is 60 miles out. Cheney again gives authorization to engage. A few minutes later and presumably after the flight has crashed or been shot down, deputy White House chief of staff Josh Bolten suggests Cheney contact President Bush to confirm the engage order. Bolten later tells the 9/11 Commission that he had not heard any prior discussion on the topic with Bush, and wanted to make sure Bush knew. Apparently, Cheney calls Bush and obtains confirmation (see 10:18 a.m.-10:20 a.m. September 11, 2001). [9/11 Commission, 6/17/2004] However, there is controversy over whether Bush approved a shootdown before this incident or whether Cheney gave himself the authority to make the decision on the spot. As Newsweek notes, it is a moot point in one sense, since the decision was made on false data and there is no plane to shoot down. [Newsweek, 6/20/2004]

Michael Gould. [Source: US Air Force]Officials in NORAD’s operations center in Cheyenne Mountain, Colorado, are notified that an aircraft out of San Diego, California, may be hijacked and could be targeting Cheyenne Mountain. [BBC, 9/1/2002; Grant, 2004, pp. 26] The FBI warns NORAD’s Cheyenne Mountain Operations Center (CMOC) “that a flight originating in San Diego might be hijacked and headed for a target in Colorado,” according to Aviation Week and Space Technology magazine. [Aviation Week and Space Technology, 6/3/2002] According to an official Air Force report on the war on terrorism, the CMOC is told that the flight is “headed to Denver,” and Brigadier General Michael Gould, the commander of the CMOC, then realizes there are “plenty” of targets near Denver, “from the Air Force bases around Colorado Springs to downtown Denver or even Cheyenne Mountain.” [Grant, 2004, pp. 26]
Cheyenne Mountain Is Plane's Target - According to other accounts, Cheyenne Mountain specifically is believed to be the plane’s intended target. [Washington Post, 7/29/2006] Brigadier General Jim Hunter, the vice commander of the CMOC, will later recall that the operations center receives intelligence that “there might be another airliner airborne from a city in the United States,” which has reportedly “been hijacked near San Diego,” and the plane’s target is “specifically Cheyenne Mountain.”
Threat Leads to Blast Doors Being Shut - The Regina Leader-Post will point out, “Protected by 2,600 feet of granite, the NORAD command centre and hundreds of personnel in their green flight suits were actually in the safest place in North America.” Hunter will comment, “They could have driven airliners into that mountain all day.” [BBC, 9/1/2002; Regina Leader-Post, 9/12/2011] But, according to some accounts, the concern about the suspicious plane is what leads to the 25-ton blast doors to the CMOC being closed for the first time ever in a real-world, non-exercise event (see (10:15 a.m.) September 11, 2001). [Toronto Star, 12/9/2001; BBC, 9/1/2002; North American Aerospace Defense Command, 9/9/2011]
Suspicious Flight Is a False Alarm - The suspect aircraft eventually identifies itself and lands uneventfully. But, Gould will recall, NORAD starts “expanding our focus away from just the northeast corridor” of the US, and also begins “considering other critical infrastructure, [such as] nuclear power plants.” Gould will add, “We’re just thinking, ‘What kind of damage could an airliner full of fuel do?’” [Grant, 2004, pp. 26]
Truck Filled with Explosives Supposedly Targeting Cheyenne Mountain - At some unspecified time, there is also a rumor that Cheyenne Mountain is being targeted by a Ryder rental truck, driven by “Arab-looking men,” that is full of explosives. [Aviation Week and Space Technology, 6/3/2002] Lieutenant Colonel William Glover, the commander of NORAD’s Air Warning Center, will recall, “We received an input that there was a yellow transport truck coming up the hill with seven Islamic folks in the front cab.” He will say, “We were receiving all kinds of input from everybody.” [BBC, 9/1/2002] Every rumor is treated as a potential threat. “It didn’t make sense, but those phone calls were happening,” Glover will say. [Aviation Week and Space Technology, 6/3/2002]

Air Force One, the president’s plane, changes course and heads west instead of north toward Washington, DC, but it currently has no specific destination. [9/11 Commission, 7/24/2004, pp. 325] Washington had been Air Force One’s original destination. [White House, 8/29/2002; Lompoc Record, 9/11/2011] And President Bush has been anxious to return to the capital. [White House, 8/12/2002; White House, 8/16/2002] But when it took off from Sarasota-Bradenton International Airport in Florida (see 9:54 a.m. September 11, 2001), Air Force One had no fixed destination. There has been a discussion between the plane’s pilot, the lead Secret Service agent on the plane, Bush’s military aide, and Bush’s chief of staff, about where to go, and it was decided that Washington was too unsafe to be their destination (see (9:55 a.m.-10:04 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 39] This decision is now passed on to the president.
President Notified of Decision to Change Course - In his 2010 memoir, Bush will recall that “[s]hortly after we took off from Sarasota,” Andrew Card, his chief of staff, and Edward Marinzel, the lead Secret Service agent, “said conditions in Washington were too volatile, the danger of attack too high. The FAA believed six planes had been hijacked, meaning three more could be in the air.” [Bush, 2010, pp. 130] Card tells Bush: “We’ve got to let the dust settle before we go back. We’ve got to find out what’s going on.” [White House, 8/16/2002] Bush tells Card and Marinzel he is “not going to let terrorists scare me away.” He says: “I’m the president. And we’re going to Washington.” However, Card and Marinzel refuse to back down. [Bush, 2010, pp. 130] Finally, “Bush reluctantly acceded” to their advice, and so “Air Force One changed course and began heading due west,” according to the 9/11 Commission Report. [9/11 Commission, 7/24/2004, pp. 325] Bush wants to know where they are now going. Card tells him that their new destination is still being decided. [White House, 8/16/2002]
Plane Turns West within '20 Minutes of Takeoff' - Air Force One begins heading west “at about 10:10,” according to the 9/11 Commission Report. [9/11 Commission, 7/24/2004, pp. 325] A reporter who is traveling on Air Force One at this time will write that the plane “suddenly veered west” within “perhaps 20 minutes of takeoff,” meaning before 10:15 a.m. Describing the plane’s initial route after taking off, this reporter will write, “Assuming that a direct flight from Sarasota to Barksdale Air Force Base [in Louisiana] would have taken us over the Gulf of Mexico, we can conclude that we flew east (to within sight of the Atlantic Ocean), then north, then west.” [USA Today, 9/11/2001] However, a few accounts will claim that Air Force One continues flying toward Washington at this time, and only changes course and heads west at around 10:45 a.m. (see (10:45 a.m.) September 11, 2001). [Sammon, 2002, pp. 108-109; Washington Post, 1/27/2002; National Journal, 8/31/2002] At around 10:20 a.m., according to the 9/11 Commission Report, Barksdale Air Force Base will be identified “as an appropriate interim destination,” and so Air Force One heads toward there (see (10:20 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 325]

The mission crew commander at NORAD’s Northeast Air Defense Sector (NEADS) tells members of his staff that the fighter jets launched from Langley Air Force Base (see (9:25 a.m.-9:30 a.m.) September 11, 2001) have “negative clearance to shoot” aircraft over Washington. [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 6/17/2003; Vanity Fair, 8/1/2006; Spencer, 2008, pp. 226-227]
Marr Does Not Pass on Authorization - NEADS battle commander Colonel Robert Marr has just been talking on the phone with Major General Larry Arnold, the commander of NORAD’s Continental US Region, and the two men have discussed whether fighters should be authorized to shoot down hostile aircraft (see (10:08 a.m.-10:10 a.m.) September 11, 2001). According to author Lynn Spencer, Arnold told Marr that if a suspicious aircraft cannot be diverted, “then we’ll shoot it down.” However, this is not the instruction that Marr then passes on to Major Kevin Nasypany, the NEADS mission crew commander. [Spencer, 2008, pp. 225-227] Marr will later tell the 9/11 Commission that at this time, he “may have had the authority” to order a plane shot down, “but he never gave [Nasypany] clearance to fire.” Marr “does not believe at this point there was a clearance to ‘kill.’” [9/11 Commission, 1/23/2004 ]
Order Issued: 'Negative Clearance to Fire' - Nasypany relays the instructions Marr gives him to those on the operations floor, saying: “Negative. Negative clearance to shoot.” He then adds: “ID. Type. Tail.” This means the orders are for fighter jets to identify aircraft by their type and tail number, and nothing more. [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 8/26/2004, pp. 46-47 ; Vanity Fair, 8/1/2006] About a minute later, Nasypany’s instructions will be passed to the Langley pilots (see 10:11 a.m. September 11, 2001). [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 6/17/2003]

Andi Ball. [Source: White House]Laura Bush, the president’s wife, and her entourage are driven from Capitol Hill to the Secret Service headquarters in Washington, DC, for their own security, but their journey is slowed by the heavy traffic. [Woodward, 2002, pp. 17; National Journal, 8/31/2002; Kessler, 2006, pp. 136; Bush, 2010, pp. 200-201] Bush has been at the Russell Senate Office Building in Washington, where she was originally scheduled to testify before a Senate committee. [CNN, 9/12/2001; Woodward, 2002, pp. 16-17] Her Secret Service agents have said they are going to take the first lady and her staff to a secure location. [Kessler, 2006, pp. 136] After the Secret Service emergency response team arrived for her, Bush was escorted out of the Russell Senate Office Building and to her limousine (see (Shortly After 10:00 a.m.) September 11, 2001). Bush and those accompanying her leave Capitol Hill at 10:10 a.m., according to Noelia Rodriguez, the first lady’s press secretary.
Agents with Guns Drawn Protect Motorcade - Secret Service agents protect Bush’s motorcade with their guns as it heads to the secure location. Ashleigh Adams, the first lady’s deputy press secretary, will later recall, “It felt like we were in a war, because the Secret Service was driving next to the motorcade and they were hanging out of the windows with their machine guns out.” She will add that she has “been around the agents” before, but has “never seen them with their guns.”
Motorcade Delayed by Traffic - However, the motorcade is slowed by the heavy traffic. Bush will describe, “Outside our convoy windows, the city streets were clogged with people evacuating their workplaces and trying to reach their own homes.” Rodriguez will say, “In the car, we seemed to be going in slow motion.” [National Journal, 8/31/2002; Bush, 2010, pp. 200] “The traffic was so bad that everything was stopped,” Andi Ball, Bush’s chief of staff, will recall. One of the Secret Service agents escorting Bush and her staff will later say a car sideswiped them during the journey.
Secure Location Is Secret Service Headquarters - The “secure location” that Bush and her staff are being taken to turns out to be the Secret Service headquarters. [Kessler, 2006, pp. 136] The Secret Service headquarters, according to journalist and author Ronald Kessler, is “an anonymous nine-story tan brick building on H Street at Ninth Street NW in Washington.” [Kessler, 2009, pp. 23] It is located a few blocks from the White House. After the Oklahoma City bombing in 1995 (see 8:35 a.m. - 9:02 a.m. April 19, 1995) it was reinforced to survive a large-scale blast. Bush and her entourage arrive there through an underground entrance. [Washington Post, 8/23/2009; Bush, 2010, pp. 200-201]
Journey Reportedly Takes 45 Minutes - The exact time they arrive at is unclear. According to Washington Post reporter Bob Woodward, “In the traffic jam from the Capitol, it took 45 minutes to get [Bush] to Secret Service headquarters.” This would mean the first lady arrives there at around 10:55 a.m. [Woodward, 2002, pp. 17] However, Bush will write that she watches the North Tower of the World Trade Center collapsing “live in front of my eyes,” on a screen at the headquarters. [Bush, 2010, pp. 201] If this is correct, she must arrive at the headquarters sometime before 10:28 a.m., when the North Tower comes down (see 10:28 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 311] White House spokespeople will refuse to disclose where the first lady has been taken to, only saying she is at a “secure location.” [Associated Press, 9/11/2001; CNN, 9/12/2001; CNN, 9/11/2002]

Unaware the aircraft has crashed, United Airlines flight dispatcher Ed Ballinger instructs Flight 93 not to divert to Washington. At 10:10, he sends a text message to Flight 93, stating: “Don’t divert to DC. Not an option.” A minute later, he resends this same message to it. [9/11 Commission, 1/27/2004; 9/11 Commission, 8/26/2004, pp. 46 ] Someone on Flight 93 had contacted the FAA at 9:30, requesting a new flight plan with the destination of Washington (see 9:30 a.m. September 11, 2001), and at 9:55 the pilot hijacker reprogrammed the plane’s navigational system for the new destination of Washington’s Reagan National Airport (see 9:55 a.m. September 11, 2001). United Airlines will not confirm that Flight 93 has crashed until around 10:15 (see (10:07 a.m.-10:15 a.m.) September 11, 2001), and will notify its employees of this at 10:17 (see 10:17 a.m. September 11, 2001).

A weapons director at NORAD’s Northeast Air Defense Sector (NEADS) informs the fighter jets launched from Langley Air Force Base (see (9:25 a.m.-9:30 a.m.) September 11, 2001) that they do not have permission to shoot down aircraft over Washington, though he is delayed in giving this instruction due to communications problems. [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 6/17/2003; 9/11 Commission, 7/24/2004, pp. 45; Vanity Fair, 8/1/2006; Spencer, 2008, pp. 227]
Citino Cannot Reach Borgstrom - Major Kevin Nasypany, the NEADS mission crew commander, has just told his staff that the Langley fighters have “negative clearance to shoot,” and the orders from higher headquarters are that the jets are to identify aircraft by their type and tail number, and nothing more (see 10:10 a.m. September 11, 2001). Now Master Sergeant Steve Citino, a NEADS weapons director, tries relaying these instructions to Captain Craig Borgstrom, one of the three Langley pilots. However, he cannot get through to him over the radio. According to author Lynn Spencer, this is because the “reception is weak over the Washington area, and NEADS loses the ability to communicate whenever [Borgstrom] flies below a certain altitude.” Citino complains to Major James Fox, the leader of the weapons team: “I can’t talk to ‘em. They’re too low.” [Vanity Fair, 8/1/2006; Spencer, 2008, pp. 227]
Citino Issues Instructions - Finally, about a minute after receiving the instructions from Nasypany, Citino reaches Borgstrom. He tells him, “Reiterating, mission is ID by type… divert if necessary.” Borgstrom acknowledges this instruction, telling Citino, “Quit 2-6 copies.” [North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 6/17/2003] When two of the Langley pilots later discuss this day’s events at a news conference, they will say they “never received explicit orders to fire on incoming planes perceived to be hostile.” [New York Times, 11/15/2001]

An officer at NORAD’s operations center in Cheyenne Mountain, Colorado, calls NORAD’s Northeast Air Defense Sector (NEADS) and asks it to stop “exercise inputs” being sent to the operations center.
NORAD Calls Chief of Exercises at NEADS - The NORAD officer, a “Captain Taylor,” calls NEADS, where the phone is answered by Captain Brian Nagel. [North American Aerospace Defense Command, 9/11/2001] Nagel is chief of NEADS live exercises. [Filson, 2003, pp. 74] After introducing himself, Taylor says, “What we need you to do right now is to terminate all exercise inputs coming into Cheyenne Mountain.” Nagel gives Taylor an extension number and suggests that he call it to get the exercise inputs stopped. Taylor replies, “I’ll do that.” [North American Aerospace Defense Command, 9/11/2001] According to an article in Vanity Fair, “inputs” are simulated scenarios that are put into play for training exercises. [Vanity Fair, 8/1/2006] NORAD has been conducting a major exercise this morning called Vigilant Guardian (see (6:30 a.m.) September 11, 2001). [Arkin, 2005, pp. 545]
Exercise Includes Simulated Radar Information - Taylor is presumably referring specifically to false tracks that have been transmitted onto NORAD radar screens for the exercise. NORAD has the capability to inject simulated material, including mass attacks, into the system during exercises, “as though it was being sensed for the first time by a radar site.” [US Department of Defense, 1/15/1999] All of the operations personnel at NEADS have been instructed to “have their sim switches turned ‘on’” (presumably to allow simulated information to appear on their radar screens) from September 6 until the end of Vigilant Guardian, on September 13. An information page on the exercise stated that a “sim test track will be in place and forward told [i.e. transferred to a higher level of command] to both NORAD and CONR,” NORAD’s Continental United States Region. [Northeast Air Defense Sector, 8/23/2001]
Exercise Supposedly Called Off Earlier - More than 50 members of the battle staff at the NORAD operations center have been participating in Vigilant Guardian this morning. [Airman, 3/2002; 9/11 Commission, 3/1/2004 ] Some accounts will claim this exercise was canceled shortly after 9:03 a.m., when the second World Trade Center tower was hit (see (Shortly After 9:03 a.m.) September 11, 2001). [Airman, 3/2002; Filson, 2003, pp. 59] And a report in the Toronto Star will state, “Any simulated information” for the exercise was “purged from the [radar] screens” at the operations center shortly before the second tower was hit (see (9:00 a.m.) September 11, 2001). [Toronto Star, 12/9/2001] But a member of staff at NEADS complained at 9:30 a.m. about simulated material still appearing on radar screens there, and at 9:34 a.m. the NEADS surveillance technicians were instructed to turn off their “sim switches” (see 9:34 a.m. September 11, 2001). [North American Aerospace Defense Command, 9/11/2001; North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 2004]