Boeing E-4

E-4
	An E-4B in flight
Role	Airborne strategic command and control post
Manufacturer	Boeing
First flight	13 June 1973
Introduction	1974
Status	In service
Primary user	United States Air Force
Number built	4
Developed from	Boeing 747-200

The Boeing E-4 Advanced Airborne Command Post (AACP), the current "Nightwatch" aircraft,^[2] is a strategic command and control military aircraft operated by the United States Air Force (USAF). The E-4 series are specially modified from the Boeing 747-200B for the National Emergency Airborne Command Post (NEACP) program.^[3]

The E-4 serves 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 operated by the 1st Airborne Command and Control Squadron of the 595th Command and Control Group located at Offutt Air Force Base, near Omaha, Nebraska. An E-4B when in action is denoted a "National Airborne Operations Center" and has been nicknamed the "Doomsday plane".^[4]

^ Cite error: The named reference USAF_fact_sheet was invoked but never defined (see the help page).
^ "Section 2−1−4. Operational Priority". Air Traffic Control (PDF) (order). FAA. 9 February 2012. JO 7110.65U..
^ Terdiman, Daniel (23 July 2013). "Aboard America's Doomsday command and control plane". CNET. Retrieved 4 December 2023.
^ Terdiman, Daniel (23 July 2013). "Aboard America's Doomsday command and control plane". CNET. Retrieved 4 December 2023.

[USAF_fact_sheet-1] Cite error: The named reference USAF_fact_sheet was invoked but never defined (see the help page).

[2] "Section 2−1−4. Operational Priority". Air Traffic Control (PDF) (order). FAA. 9 February 2012. JO 7110.65U..

[3] Terdiman, Daniel (23 July 2013). "Aboard America's Doomsday command and control plane". CNET. Retrieved 4 December 2023.

[4] Terdiman, Daniel (23 July 2013). "Aboard America's Doomsday command and control plane". CNET. Retrieved 4 December 2023.

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