Looking Glass (or Operation Looking Glass) is the code name for an airborne command and control center operated by the United States. In more recent years it has been more officially referred to as the ABNCP (Airborne Command Post). It provides command and control of U.S. nuclear forces in the event that ground-based command centers have been destroyed or otherwise rendered inoperable. In such an event, the general officer aboard the Looking Glass serves as the Airborne Emergency Action Officer (AEAO) and by law assumes the authority of the National Command Authority and could command execution of nuclear attacks. The AEAO is supported by a battle staff of approximately 20 people, with another dozen responsible for the operation of the aircraft systems. The name Looking Glass, which is another word for a mirror, was chosen for the Airborne Command Post because the mission operates in parallel with the underground command post at Offutt Air Force Base.
The code name "Looking Glass" came from the aircraft's ability to "mirror" the command and control functions of the underground command post at Strategic Air Command headquarters.
Operation Looking Glass was initiated by the U.S. Air Force's Strategic Air Command in 1961 and operated by the 34th Air Refueling Squadron, Offutt AFB, Nebraska. In August 1966 the mission transferred to the 38th Strategic Reconnaissance Squadron, the 2nd Airborne Command and Control Squadron in April 1970, to the 7th Airborne Command and Control Squadron in July 1994, and to the USSTRATCOM's Strategic Communications Wing One in October 1998.