The US military operates a fleet of VIP civilian aircraft converted to military use in addition to its warfighting, troop transport, and cargo planes.
In addition to its warfighting, troop transport, and cargo aircraft, the military operates a fleet of converted civilian aircraft for use by VIP government officials, military leaders, and in combat zones. On the battlefield, the aircraft serve as lifelines to troops fighting on the front line, with some providing vital intelligence and others relaying critical communications. The most notable converted civilian aircraft in the military's fleet is a VC-25 used by the president of the United States, known to many as Air Force One.
The Air Force has two of the aircraft in its fleet to ensure the president can always access his flagship plane. The two VC-25s are identical on the inside and travel together frequently on presidential missions.