An intro to the Presidential Plane, from WhiteHouse.Gov:
No matter where in the world the President travels, if he flies in an Air Force jet, the plane is called Air Force One. Technically, Air Force One is the call sign of any Air Force aircraft carrying the President. In practice, however, Air Force One is used to refer to one of two highly customized Boeing 747-200B series aircraft, which carry the tail codes 28000 and 29000. The Air Force designation for the aircraft is VC-25A.
Air Force One is one of the most recognizable symbols of the presidency, spawning countless references not just in American culture but across the world. Emblazoned with the words “United States of America,” the American flag, and the Seal of the President of the United States, it is an undeniable presence wherever it flies or docks.
Capable of refueling midair, Air Force One has unlimited range and can carry the President wherever he needs to travel. The onboard electronics are hardened to protect against an electromagnetic pulse, and Air Force One is equipped with advanced secure communications equipment, allowing the aircraft to function as a mobile command center in the event of an attack on the United States.
Inside, the President and his travel companions enjoy 4,000 square feet of floor space on three levels, including an extensive suite for the President that features a large office, lavatory, and conference room. Air Force One includes a medical suite that can function as an operating room, and a doctor is permanently on board. The plane’s two food preparation galleys can feed 100 people at a time.
Air Force One also has quarters for those who accompany the President, including senior advisors, Secret Service officers, traveling press, and other guests. Several cargo planes typically fly ahead of Air Force One to provide the President with services needed in remote locations.
Air Force One is maintained and operated by the Presidential Airlift Group, part of the White House Military Office. The Airlift Group was founded in 1944 as the Presidential Pilot Office at the direction of President Franklin D. Roosevelt. For the next 20 years, various propeller driven aircraft served the President. In 1962, President John F. Kennedy became the first President to fly in his own jet aircraft, a modified Boeing 707. Over the years, several other jet aircraft have been used, with the first of the current aircraft being delivered in 1990 during the administration of President George H. W. Bush.