| 1948–1952, 1962-1976|| United States|
| United States Air Force|
General Radar Surveillance
645th Radar Squadron Wikipedia
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.
The unit was a General Surveillance Radar squadron providing for the air defense of the United States.
LineageActivated 30 April 1948 as the 645th Aircraft Control Squadron
Redesignated 6 December 1949 as the 645th Aircraft Control and Warning Squadron
Inactivated on 6 February 1952
Redesignated 645th Radar Squadron (SAGE)and activated on 28 June 1963
Organized on 1 November 1962
Redesignated 645th Radar Squadron on 1 February 1974
Inactivated on 1 April 1976
Assignments503d Aircraft Control and Warning Group, 30 April 1949 – 6 February 1952
Air Defense Command, 28 June 1962
Montgomery Air Defense Sector, 1 November 1962
32d Air Division, 1 April 1966
33d Air Division, 14 November 1969
20th Air Division, 19 November 1969 – 1 April 1976
StationsRoslyn AFS, New York, 1 April 1948
Selfridge AFB, Michigan, March 1949
Roslyn AFS, New York, 8 December 1949 - 6 February 1952
Patrick AFB, Florida, 28 June 1962 – 1 April 1976
NotesThe squadron was programmed for activation in the 1950s at Marathon AS, Ontario, but this action was cancelled. During the 1960s Air Force units that were activated were paper units until they were organized.