The 639th Aircraft Control and Warning Squadron is an inactive

United States Air Force The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...

unit. It was last assigned to the

Sault Sainte Marie Air Defense Sector The Sault Sainte Marie Air Defense Sector (SsmADS) is an inactive United States Air Force organization. Its last assignment was with the 30th Air Division, being stationed at K.I. Sawyer Air Force Base, Michigan. History SsmADS was establ ...

Air Defense Command Aerospace Defense Command was a major command (military formation), command of the United States Air Force, responsible for air defense of the continental United States. It was activated in 1968 and disbanded in 1980. Its predecessor, Air De ...

, stationed at Lowther Air Station, Ontario, Canada. It was inactivated on 1 July 1963. The unit was a general surveillance radar squadron providing for the air defense of North America. Lineage * Activated as 639th Aircraft Control and Warning Squadron, 1 December 1956 : Inactivated on 1 July 1963 Assignments *

37th Air Division The 37th Air Division (37th AD) is an inactive United States Air Force organization. Its last assignment was with Air Defense Command at Goose Air Force Base, Labrador, Canada It was inactivated on 30 June 1970. History Strategic Air Command Es ...

, 1 December 1956 *

30th Air Division The 30th Air Division (30th AD) 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 Air National Guard Base, Sioux City Municipal Air ...

, 1 April 1959 *

, 1 April 1960 – 1 July 1963 Stations * Truax Field, Wisconsin, 1 December 1956 * Lowther Air Station, 1 July 1957 – 1 July 1963

References

* Cornett, Lloyd H. and Johnson, Mildred W., ''A Handbook of Aerospace Defense Organization 1946 - 1980'

Office of History, Aerospace Defense Center, Peterson AFB, CO (1980)

External links

{{Use dmy dates, date=June 2017 Radar squadrons of the United States Air Force Aerospace Defense Command units