National Emergency Airborne Command Post (NEACP)
Before there was a Phoenix Raven program there were the NEACP SPs. Beginning in 1979, the air force took delivery on a total of 4 E-4 designated aircraft. The Boeing E-4 Advanced Airborne Command Post, with the project name "Nightwatch" was specially modified from the Boeing 747-200B. The E-4 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 four E-4Bs are currently operated by the1st Airborne Command and Control Squadron of the55th Wing located at Offutt Air Force Base, near Omaha, Nebraska. An E-4B is denoted a "National Airborne Operations Center" when in action.
Security Forces are on alert with these aircraft and one is stationed at Andrews AFB as well as at Offutt AFB in Nebraska to provide close in security support for the aircraft.