331 FIS

The 331st Fighter-Interceptor Squadron (FIS) was a unit of the United States Air Force, originally activated during World War II. Established in 1942, it participated in air defense and training missions, operating aircraft such as the P-47 Thunderbolt and later the F-86 Sabre. During the Cold War, the squadron was reactivated and assigned to the Air Defense Command, providing air defense for the continental United States against potential Soviet bomber threats. The 331st FIS was inactivated in 1967 as part of a broader reorganization of U.S. air defense forces.