This Boeing 707 is called Special Air Mission 27000, or SAM 27000 for short. For 29 years, when one of six US presidents was inside, its air traffic control call sign was Air Force One. Nixon was the first to ride in it. After his resignation in 1974, it flew him back to California. When George W. Bush’s presidency ended, it brought him to Texas on August 29, 2001. Then, its last flight was to California where it was dismantled and reassembled at the Air Force One Pavilion in the Ronald Reagan Presidential Library in Simi Valley, California. The helicopter is a Sikorsky VH-3 Sea King, called Marine One. The chopper was predominately used by Lyndon Johnson.