Air Force One, the call sign of whichever Air Force plane the President of the United States is flying on, has long been known for the security and comfort it provides its famous cargo.
But everything changed with Sept. 11, 2001. The crew realized the plane had weaknesses. It lacked features that would have let President George W. Bush address the nation.
The Presidential Airlift Group (PAG), in charge of Air Force One, stepped up its game, and managed to take Bush to Baghdad on a top-secret mission in the dark of night to serve Thanksgiving dinner to troops in 2003.
The National Geographic Channel took a behind-the-scenes look at the Flying White House in "Onboard Air Force One," an in-depth look at the PAG, the cavernous hangar at Andrews Air Force Base (AFB) that Air Force One calls home, and everything the aircraft has to offer the president and his trusted advisers.
The security starts in this massive hangar at Andrews AFB, where Air Force One and its twin stay
There are two so if one malfunctions another is available to sweep the President off to where he needs to be
Parts are repaired or replaced as soon as they show the slightest wear and tear
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