20th Surveillance Squadron

The 20th Surveillance Squadron was a United States Air Force unit responsible for space surveillance operations. Activated in 1966, it operated the AN/FPS-85 phased-array radar at Eglin Air Force Base, Florida, which was one of the world's most powerful space tracking radars. The squadron’s mission focused on detecting, tracking, and cataloging objects in Earth’s orbit to support national security and space situational awareness. In 1995, the unit was redesignated as the 20th Space Control Squadron, continuing its vital space surveillance role within Air Force Space Command.