Empire Air Force Station is a former United States Air Force Aerospace Defense Command (ADC) long range radar site located 0.7 miles (1.1 km) south-southeast of Empire, Michigan, in Empire Township. It was closed in 1978 by the Air Force, and turned over to the Federal Aviation Administration (FAA).
The 30th Air Division is an inactive United States Air Force organization. Its last assignment was with Air Defense Command, assigned to Tenth Air Force, being stationed at Sioux City Municipal Airport, Iowa. It was inactivated on 18 September 1968.
The Detroit Air Defense Sector (DEADS) is an inactive United States Air Force organization. Its last assignment was with the Air Defense Command (ADC) 26th Air Division at Custer Air Force Station (AFS), Michigan. It was inactivated on 1 April 1966.
The 4708th Air Defense Wing is a discontinued United States Air Force organization. Its last assignment was with the 30th Air Division of Air Defense Command (ADC) at Selfridge Air Force Base (AFB), Michigan, where it was discontinued in 1956. It was established in 1952 at Selfridge as the 4708th Defense Wing in a general reorganization of Air Defense Command (ADC), which replaced wings responsible for a base with wings responsible for a geographical area. It assumed control of several fighter Interceptor squadrons that had been assigned to the 56th Fighter-Interceptor Wing, some of which were Air National Guard squadrons mobilized for the Korean War.
Antigo Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 7.5 miles (12.1 km) south-southwest of Antigo, Wisconsin. It was closed in 1977 and is currently classified as a high risk toxic waste site involving groundwater, sediment, soil and surface water.
Calumet Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 5.2 miles (8.4 km) east-northeast of Phoenix, Michigan. It was closed in 1988 by the Air Force, and turned over to the Federal Aviation Administration (FAA).
Bedford Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 12.7 miles (20.4 km) north of Bedford, Virginia. It was closed in 1975.
Caswell Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 4.3 miles (6.9 km) north of Limestone, Maine. It was closed in 1980.
The 645th Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 20th Air Division, Aerospace Defense Command, stationed at Patrick Air Force Base, Florida. It was inactivated on 1 April 1976.
Custer Air Force Station is a closed United States Air Force General Surveillance Radar and Direction Center station. It is located 5.3 miles (8.5 km) west-northwest of Battle Creek, Michigan. It was closed in 1969.
Bellefontaine Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 2.3 miles (3.7 km) east-northeast of Bellefontaine, Ohio. It was closed in 1969.
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.
Finland Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 2.8 miles (4.5 km) north of Finland, Minnesota. It was closed in 1980.
Chandler Air Force Station is a closed United States Air Force General Surveillance Radar station. It is 2.2 miles (3.5 km) south of Chandler, Minnesota, on the Buffalo Ridge in section 13 of Moulton Township, Murray County. It was closed in 1969.
The 801st Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 28th Air Division, Aerospace Defense Command, stationed at Malmstrom Air Force Base, Montana. It was inactivated on 1 July 1974.
Condon Air Force Station is a closed United States Air Force General Surveillance Radar station. It is located 5.7 miles (9.2 km) west of Condon, Oregon. It was closed in 1970.
The 634th Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 20th Air Division, Aerospace Defense Command, stationed at Lake Charles Air Force Station, Louisiana. It was inactivated on 1 July 1974.
The 660th Radar Squadron is an inactive United States Air Force unit. It was last assigned to the 20th NORAD Region (ADTAC), Tactical Air Command, stationed at MacDill AFB, Florida. It was inactivated on 15 November 1980.
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 Selfridge AFB radar station is a United States military facility in Michigan. It began operations in 1949 with a Bendix AN/CPS-5 Radar test that tracked aircraft at 210 mi (340 km). A height finder MIT AN/CPS-4 Radar was added by March 9, 1950; and the station was site L-17 of the Lashup Radar Network and site LP-17 of the subsequent network during construction of the Air Defense Command permanent network. The 661st Aircraft Control and Warning Squadron was activated at Selfridge in 1951, and with a pair of General Electric AN/CPS-6 Radars, the station became site LP-20 of the permanent ADC network in 1952. In 1957 the station added a height finder General Electric AN/FPS-6 Radar. The station became part of the Semi Automatic Ground Environment radar network in 1959, supplying radar tracks to SAGE data center DC-06 at Custer Air Force Station, Michigan, for directing interceptor aircraft and CIM-10 Bomarc air defense missiles.
