The Department of Defense (also known as the Defense Department, USDOD, DOD, DoD or the Pentagon) is the Executive Department of the Government of the United States of America charged with coordinating and supervising all agencies and functions of the government concerned directly with national security and the United States armed forces. The Department is also the largest employer in the world, with more than 2.13 million active duty Soldiers, Sailors, Marines, Airmen, and also civilian workers, and over 1.1 million National Guardsmen and members of the Army, Navy, Air Force, and Marine Reserves. The grand total is just over 3.2 million servicemen and servicewomen, plus the civilians who support them.

The Department – headed by the Secretary of Defense – has three subordinate military departments: the Department of the Army, the Department of the Navy, and the Department of the Air Force. In addition, there are many Defense Agencies such as the Defense Advanced Research Projects Agency (DARPA), the Defense Intelligence Agency (DIA), the Defense Logistics Agency (DLA), the Missile Defense Agency, the National Geospatial-Intelligence Agency (NGA), the National Reconnaissance Office (NRO), the National Security Agency (NSA), and the Pentagon Force Protection Agency (PFPA), all of which are under the command of the Secretary of Defense. DoD also operates several joint services schools, including the National Defense University (NDU) and the National War College (NWC).

The United States of America (commonly abbreviated to the United States, the U.S., the USA, America, and the States) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west, across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Pacific and Caribbean.

At 3.79 million square miles (9.83 million km²) and with over 312 million people, the United States is the third or fourth largest country by total area, and the third largest by both land area and population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The U.S. economy is the world's largest national economy, with an estimated 2011 GDP of $15.1 trillion (22% of nominal global GDP and over 19% of global GDP at purchasing-power parity). Per capita income is the world's sixth-highest.

Walter Leland Cronkite, Jr. (November 4, 1916 – July 17, 2009) was an American broadcast journalist, best known as anchorman for the CBS Evening News for 19 years (1962–81). During the heyday of CBS News in the 1960s and 1970s, he was often cited as "the most trusted man in America" after being so named in an opinion poll. Although he reported many events from 1937 to 1981, including bombing in World War II, the Nuremberg trials, combat in the Vietnam War,Watergate, the Iran Hostage Crisis, and the murders of President John F. Kennedy, civil rights pioneer Martin Luther King, Jr., and The Beatles musician John Lennon, he was known for extensive TV coverage of the U.S. space program, from Project Mercury to the Moon landings to the Space Shuttle. He was the only non-NASA recipient of a Moon-rock award. Cronkite is well known for his departing catchphrase "And that's the way it is," followed by the date on which the appearance is aired.

Cronkite was born in Saint Joseph, Missouri, the son of Helen Lena (née Fritsche, August 1892 - November 1993), and Dr. Walter Leland Cronkite (September 1893 - May 1973), a dentist. He had remote Dutch ancestry on his father's side, the family surname originally being Krankheyt.