661st Radar Squadron

• Formation and Early Years: The 661st Radar Squadron was first activated on 1 January 1951 as part of the United States Air Force’s efforts to bolster air defense during the early years of the Cold War. • Location: The squadron was stationed at Selfridge Air Force Base, Michigan, a location strategically chosen to protect the Great Lakes region and the industrial heartland of the United States. • Role in Air Defense Command: The 661st was a General Surveillance Radar squadron, tasked with detecting, tracking, and identifying aircraft entering U.S. airspace, particularly during periods of heightened tension with the Soviet Union. • SAGE Integration: In the late 1950s, the squadron became part of the Semi-Automatic Ground Environment (SAGE) system, which was an early computer network designed to automate and coordinate air defense across North America. • 24/7 Operations: Members of the squadron worked around the clock, often in challenging weather conditions, maintaining radar vigilance against potential threats. • Cuban Missile Crisis: During the Cuban Missile Crisis in 1962, the 661st Radar Squadron played a crucial role in monitoring air traffic and ensuring the security of the northern United States. • Technological Evolution: The unit operated various radar systems over its lifespan, including the AN/FPS-20 and later the more advanced AN/FPS-67 search radar, reflecting the rapid technological advancements of the era. • Organizational Changes: The squadron underwent several reassignments, being part of different Air Divisions and Sectors as the Air Defense Command’s structure evolved. • Inactivation: The 661st Radar Squadron was inactivated on 1 July 1974, as part of a broader drawdown of continental air defense resources due to changing strategic priorities and technological improvements. • Legacy: While no longer active, the 661st Radar Squadron is remembered by veterans and historians as a vital component of America's Cold War air defense network, and its former site has been commemorated in local military history.