Finley Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 1.5 miles (2.4 km) west-northwest of Finley, North Dakota. It was closed in 1979 by the Air Force, and turned over to the Federal Aviation Administration (FAA).
Lewistown Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 7.0 miles (11.3 km) east-southeast of Hilger, Montana. It was closed in 1971.
The Spokane Air Defense Sector (SPADS) is an inactive United States Air Force organization. Its last assignment was with the Air Defense Command 25th Air Division at Larson Air Force Base in Grant County, Washington
The 4732nd Air Defense Group is a discontinued United States Air Force organization. Its last assignment was with the 64th Air Division of Air Defense Command at Goose Air Force Base, Newfoundland, Canada, where it was discontinued in 1960. The group was formed in 1957 when ADC assumed responsibility for air defense of Newfoundland and Northern Canada from Northeast Air Command and controlled a fighter-interceptor squadron at Harmon and seven squadrons operating radars at dispersed locations. It was discontinued when Goose Air Defense Sector assumed responsibility for air defense of Newfoundland and Northern Canada.
The 4731st Air Defense Group is a discontinued United States Air Force organization. Its last assignment was with the 64th Air Division of Air Defense Command (ADC) at Ernest Harmon Air Force Base, Newfoundland, Canada, where it was inactivated in 1960. The group was formed in 1957 when ADC assumed responsibility for air defense of Newfoundland from Northeast Air Command and controlled a fighter-interceptor squadron at Harmon and two squadron operating radars at dispersed locations. It was discontinued when Goose Air Defense Sector assumed responsibility for air defense of Newfoundland.
The 4734th Air Defense Group is a discontinued United States Air Force organization. Its last assignment was with the 64th Air Division (AD) at Thule Air Base, Greenland, where it was discontinued in 1958. The group was formed in 1957 when ADC assumed responsibility for air defense of Greenland from Northeast Air Command. It controlled a fighter-interceptor squadron at Thule and a squadron operating a radar at nearby Pingarsuak Mountain. It was discontinued in 1958 and its mission transferred to the 64th AD in Newfoundland.
The 4683d Air Defense Wing is a discontinued United States Air Force (USAF) organization. Its last assignment was with Aerospace Defense Command (ADC)'s Goose Air Defense Sector at Thule Air Base, Greenland, where it was discontinued in 1965.
The 680th Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 20th Air Division, Aerospace Defense Command, stationed at Palermo Air Force Station, New Jersey. It was inactivated on 30 May 1970.
Port Austin Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 1.2 miles (1.9 km) south-southwest Port Austin, Michigan. It was closed in 1988 by the Air Force.
The 661st Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 23d Air Division, Aerospace Defense Command, stationed at Selfridge Air Force Base, Michigan. It was inactivated on 1 July 1974.
Osceola Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 5.6 miles (9.0 km) south-southeast of Osceola, Wisconsin. It was closed in 1975.
The 793d Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 30th Air Division, Aerospace Defense Command, stationed at Hutchinson Air Force Station, Kansas. It was inactivated on 8 September 1968.
The 543d Aircraft Control and Warning Group is a disbanded United States Air Force unit. It was last assigned to the 31st Air Division, Air Defense Command, stationed at Fort Snelling, Minnesota. It was inactivated on 10 February 1952.
The 503d Aircraft Control and Warning Group (AC&WG) is an inactive United States Air Force unit. Its last assignment was with Air Defense Command (ADC)'s 26th Air Division at Roslyn AFS New York. It was inactivated in 1952.
The 542d Aircraft Control and Warning Group is an inactive United States Air Force unit. It was last assigned to the 28th Air Division, stationed at Hamilton Air Force Base, California. It was inactivated on 6 February 1952.
The 540th Aircraft Control and Warning Group is an inactive United States Air Force unit. It was assigned to the 32d Air Division, stationed at Stewart Air Force Base, New York. It was inactivated on 6 February 1952.
The 546th Aircraft Control and Warning Group is an inactive United States Air Force unit. It was assigned to the 33d Air Division, stationed at Tinker Air Force Base, Oklahoma. It was inactivated on 4 June 1951.
The 541st Aircraft Control and Warning Group (AC&WG) is a disbanded United States Air Force unit. It was last assigned to the 30th Air Division, stationed at Selfridge Air Force Base, Michigan. It was inactivated on 6 February 1952 and disbanded on 21 September 1984.
The 544th Aircraft Control and Warning Group is an inactive United States Air Force unit. It was assigned to the 27th Air Division, and last stationed at Norton Air Force Base, California. It was inactivated on 6 February 1952.
La Scie Air Station was a General Surveillance Gap Filler Radar station in the Canadian province of Newfoundland and Labrador, It was located 210 miles (340 km) east-northeast of St.John's, Near La Scie. It was closed in 1961.
United States Air Force 
