Air Force One is the special plane of the President of the United States. The blue-and-white Boeing 747 has become a symbol of power in the United States and has become an international totem in the United States. Air Force One is also often referred to as the "White House in the Air." The most commonly used by the President of the United States is two VC-25A aircraft, tail number 28,000 and SAM 29000. The two aircraft are modified Boeing 747-2G4B civil aircraft. Because of his excellent safety performance, Obama's "Air Force One" is also known as the "Oval Office in the Air." Although Air Force One was not equipped with any offensive weapons, a number of jamming devices were installed to guard against missile attacks. However, due to the fact that Boeing 747-200 series aircraft from all over the world have basically withdrawn from service, the US President's special plane can be said to be the oldest 747 aircraft flying passengers. The only passenger aircraft that was still flying with the two Air Force One at the same time was the Iranian Air Force and Iran Airlines Boeing 747 fleet. However, Obama has already approved the budget for the new aircraft and rebuilt the new plane based on the Boeing 747-8, but he will not be able to catch the ride during his term of office.