Air Force One facts

• Air Force One’s inaugural flight took place on January 11, 1959.
• Air Force One is the official air traffic control call sign of any United States Air Force aircraft carrying the President of the United States.
• Lyndon Johnson took the the presidential oath of office aboard Air Force One on the tarmac in Dallas following John F. Kennedy’s assassination on November 22, 1963.
• Air Force One is a prominent symbol of the American presidency and its power, and the aircraft are among the most famous and most photographed in the world.
• The President's personal office is called the oval office. Any plane he flies on is called Air Force One, and any helicopter is called Marine One.
• The Air Force operates two identical planes that are used to carry the President. Neither aircraft can be called “Air Force One” until the President steps aboard. The second plane, which carries the Vice President, is referred to as “Air Force Two.”
• The Air Force is currently looking into replacing the two aircraft used as Air Force One, with Boeing the only contender. The Air Force expects three aircraft, one each delivered in fiscal 2017, 2019 and 2021. 
• United Airlines was the only commercial airline to have operated Executive One, the designation given to a civilian flight on which the U.S. President is aboard. On December 26, 1973, then-President Richard Nixon flew as a passenger aboard a Washington Dulles to Los Angeles International flight. It was explained by his staff that this was done in order to conserve fuel by not having to fly the usual Boeing 707 Air Force aircraft.