Naval Security Group Edzel Scotland

The Naval Security Group Activity (NSGA) Edzell, Scotland, was a United States Navy signals intelligence (SIGINT) unit established in 1960 at RAF Edzell, near the village of Edzell in northeast Scotland. Its primary mission was to conduct communications and electronic surveillance as part of the broader U.S. and NATO intelligence efforts during the Cold War, focusing on monitoring Soviet naval operations in the North Atlantic. NSGA Edzell played a key role in the global cryptologic network, working closely with British and other allied intelligence agencies. The unit remained operational until its closure in 1997, following post-Cold War downsizing and changes in strategic requirements.