San Francisco Air Defense Sector (SFADS)

The San Francisco Air Defense Sector (SFADS) was an integral part of the United States Air Force Air Defense Command, established in 1959 to provide air defense for Northern California and parts of Nevada. Headquartered at Beale Air Force Base, SFADS operated advanced radar sites and interceptor aircraft to detect and respond to potential Soviet bomber threats during the Cold War. The sector coordinated with the Semi-Automatic Ground Environment (SAGE) system, enhancing rapid response capabilities through real-time data processing and communication. SFADS was inactivated in 1963 as part of a broader reorganization and consolidation of air defense units across the country.