6921st Security Wing

The 6921st Security Wing was a United States Air Force unit activated in 1970 at Misawa Air Base, Japan, as part of the Air Force Security Service (USAFSS). Its mission focused on signals intelligence (SIGINT) and electronic surveillance during the Cold War, primarily monitoring Soviet and regional communications in the Far East. The wing played a crucial role in intelligence gathering, supporting both strategic and tactical operations throughout the Pacific theater. In 1979, the 6921st was reorganized and redesignated as the 6920th Security Wing, continuing its vital intelligence mission under a new designation.