| 1952-1963|| United States|
| United States Air Force|
General radar surveillance
639th Aircraft Control and Warning Squadron Wikipedia
The 639th Aircraft Control and Warning Squadron is an inactive United States Air Force unit. It was last assigned to the Sault Sainte Marie Air Defense Sector, Air Defense Command, 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.
LineageActivated as 639th Aircraft Control and Warning Squadron, 1 December 1956
Inactivated on 1 July 1963
Assignments37th Air Division, 1 December 1956
30th Air Division, 1 April 1959
Sault Sainte Marie Air Defense Sector, 1 April 1960 – 1 July 1963
StationsTruax Field, Wisconsin, 1 December 1956
Lowther Air Station, 1 July 1957 – 1 July 1963