4th ACCS

The **4th Airborne Command and Control Squadron (4th ACCS)** was a United States Air Force unit tasked with providing airborne command post capabilities during the Cold War. Activated in 1965, the squadron operated EC-135 aircraft as part of Strategic Air Command’s "Looking Glass" mission, ensuring survivable command and control for U.S. nuclear forces. The 4th ACCS was based primarily at Ellsworth Air Force Base, South Dakota, and played a crucial role in maintaining national command authority continuity. The unit was inactivated in 1992 following the end of the Cold War and changes in U.S. strategic requirements.