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September 11 attacks
From
Wikipedia, the free encyclopedia
"
9/11" redirects here. For the date, see
September 11.
For other uses, see September 11 attacks (disambiguation).
September 11 attacks
Part of
Terrorism in the United States
A montage of eight images depicting, from top to bottom, the
World Trade Center towers burning, the collapsed section of the
Pentagon, the impact explosion in the south tower, a rescue worker standing in front of rubble of the collapsed towers, an excavator unearthing a smashed jet engine, three frames of video depicting airplane hitting the Pentagon.
Top row:
The Twin Towers of the
World Trade Center burning
2nd row, left to right: Collapsed section of
the Pentagon;
Flight 175 crashes into
2 WTC;
3rd row, left to right: A firefighter requests
assistance at
World Trade Center site;
Ground Zero; An engine
from
Flight 93 is recovered
Bottom row:
Flight 77's collision with the
Pentagon as captured by three
consecutive
CCTV frames.
Location
Manhattan, New York,
New York;
Arlington County, Virginia;
vicinity of
Shanksville, Pennsylvania
Date September 11, 2001; 14 years ago
8:46 a.m. – 10:28 a.m. (
EDT)
Target
World Trade Center
(
AA11 and
UA 175)
The Pentagon (
AA77)
White House or
U.S. Capitol
(
UA 93; failed)
Attack type
Aircraft hijackings
Suicide attacks
Mass murder
Terrorism
Deaths 2,996 (2,
977 victims +
19 hijackers)
Non-fatal injuries
6,
000+
Perpetrators
al-Qaeda[1] (see also responsibility and hijackers)
Number of participants
19
The September 11 attacks (also referred to as 9/11)[nb 1] were a series of four coordinated terrorist attacks by the
Islamic terrorist group Al-Qaeda on the
United States on the morning of Tuesday, September 11, 2001.
The attacks consisted of suicide attacks used to target symbolic
U.S. landmarks.
Four passenger airliners—which all departed from airports on the U.S.
East Coast bound for
California—were hijacked by 19 al-Qaeda terrorists to be flown into buildings. Two of the planes,
American Airlines Flight 11 and
United Airlines Flight 175, were crashed into the
North and South towers, respectively, of the World Trade Center complex in
New York City.
Within an hour and 42 minutes, both 110-story towers collapsed, with debris and the resulting fires causing partial or complete collapse of all other buildings in the World Trade Center complex, including the 47-story
7 World Trade Center tower, as well as significant damage to ten other large surrounding structures. A third plane,
American Airlines Flight 77, was crashed into the Pentagon (the headquarters of the
United States Department of Defense) in Arlington County, Virginia, leading to a partial collapse in the Pentagon's western side. The fourth plane,
United Airlines Flight 93, initially was steered toward
Washington, D.C., but crashed into a field near Shanksville, Pennsylvania, after its passengers tried to overcome the hijackers. In total, the attacks claimed the lives of 2,996 people (including the 19 hijackers) and caused at least $10 billion in property and infrastructure damage[2][3] and $3 trillion in total costs.[4] It was the deadliest incident for firefighters and law enforcement officers[5] in the history of the United States, with 343 and 72 killed respectively.
Suspicion for the attack quickly fell on Al-Qaeda.
The United States responded to the attacks by launching the
War on Terror and invading
Afghanistan to depose the Taliban, which had harbored al-Qaeda. Many countries strengthened their anti-terrorism legislation and expanded the powers of law enforcement and intelligence agencies to prevent terrorist attacks. Although al-Qaeda's leader,
Osama bin Laden, initially denied any involvement, in 2004 he claimed responsibility for the attacks.[1] Al-Qaeda and bin Laden cited U.S. support of
Israel, the presence of U.S. troops in
Saudi Arabia, and sanctions against
Iraq as motives.
Having evaded capture for almost a decade, bin Laden was located and killed by members of the
U.S. military in May
2011.
The destruction of the World Trade Center and nearby infrastructure caused serious damage to the economy of
Lower Manhattan and had a significant effect on global markets, closing
Wall Street until
September 17 and the civilian airspace in the U.S. and
Canada until
September 13. Many closings, evacuations, and cancellations followed, out of respect or fear of further attacks.
Cleanup of the World Trade Center site was completed in May
2002, and the Pentagon was repaired within a year. On
November 18,
2006, construction of
One World Trade Center began at the World Trade Center site. The building was officially opened on
November 3, 2014.[
6][7] Numerous memorials have been constructed, including the
National September 11 Memorial &
Museum in New York City, the
Pentagon Memorial in Arlington County, Virginia, and the
Flight 93 National Memorial in a field near Shanksville, Pennsylvania.