𝐅𝐒𝐗 - Boeing E-4B "Nightwatch": Startup, Takeoff from Offutt AFB, Nebraska

In the event of a national emergency, such as a nuclear attack, the Boeing E-4 "Nightwatch" aircraft (Converted 747-200s), serve as a survivable mobile command post for the National Command Authority, namely the President of the United States, the Secretary of Defense, and successors. The media dubbed the aircraft, "The Doomsday Planes."