New Delhi: Air Force One is the US President's special aircraft. Whenever the US president travels overseas or across the country, he takes his high-tech deluxe jumbo jet with him.
During the September 11 terror attacks, the president's plane showed that it was much more than an executive jet -- it became a mobile bunker when all ground positions seemed vulnerable to attack.
With all of the things that Air Force One carries, it's no wonder the media calls it the "flying White House."