Fortuna Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located west of Fortuna, North Dakota. It was closed in 1979 as a radar station, remaining as a Long-Range Radar (LRR) facility until 1984. Fortuna Air Force Station was part of the last batch of twenty-three radar stations constructed as part of the Air Defense Command permanent network. It was activated in April, and declared completely operational in late 1952.