NSA Argentia, New Foundland

NSA Argentia, located in Newfoundland, was established during World War II as a strategic United States naval base under the 1940 Destroyers for Bases Agreement with the United Kingdom. Officially commissioned in 1941, the base played a crucial role in North Atlantic convoy protection, anti-submarine warfare, and served as a key assembly point for Allied naval operations. NSA Argentia also hosted the historic Atlantic Conference in August 1941, where President Franklin D. Roosevelt and Prime Minister Winston Churchill formulated the Atlantic Charter. The base remained active throughout the Cold War, supporting submarine detection and communications, until its closure in 1994.