E-4B
An E-4B from the 55th Wing, Offutt AFB, Neb. receives fuel from a KC-135 Stratotanker operated by the 931st Air Refueling Group, McConnell Air Force Base, Kan., during a night refueling Dec. 5. The E-4B serves as the National Airborne Operations Center for the president and secretary of defense. In case of national emergency or destruction of ground command control centers, the E-4B provides a survivable, command, control and communications center to direct U.S. forces, execute emergency war orders and coordinate actions by civil authorities. (Air Force photo by Senior Master Sgt. Ray Lewis)