US E-4B 'Doomsday Plane' tracked to Andrews AFB

A US Air Force E-4B Nightwatch aircraft, the National Airborne Operations Center (NAOC), was tracked on approach to Joint Base Andrews in Maryland. The aircraft, using the callsign BEAR?16, was monitored via live air traffic control audio and flight tracking data. The E-4B serves as a survivable airborne command post for the National Military Command System, capable of directing forces in a national emergency. Its arrival at Andrews, the home base for presidential aircraft, is a routine but notable movement of a key strategic asset.