It served in this role until 1944 when the reduced threat to the canal and the Caribbean permitted its transfer to the United States, where it was inactivated.

The mission of the 31st is to enhance, sustain, and operate a synthetic environment to optimize warfighting capabilities and ready aircrew.

It was initially equipped with a mixture of second-line pursuit aircraft, including Boeing P-26A Peashooters, Northrup A-17 Nomads, and some North American BC-1s.

In December, "E" Flight was moved to San Jose Airport, Costa Rica where it was almost immediately reassigned to the 53d Fighter Squadron.

[1] The squadron was activated once again as part of the 412th Fighter Group, which was located at Muroc Army Air Field, California in August 1944.

[1] It became a testing unit for the Bell P-59 Airacomet and Lockheed P-80 Shooting Star jet aircraft under Fourth Air Force.

The squadron provided Army Air Forces pilots and ground crews with valuable data about the difficulties and pitfalls involved in converting to jet aircraft.

In the summer of 1955 ADC implemented Project Arrow, which was designed to bring back on the active list the fighter units which had compiled memorable records in the two world wars and associate them with their traditional headquarters.

[1] The squadron was again reactivated in 1956 at Wurtsmith Air Force Base, Michigan[1] and equipped with supersonic Convair F-102 Delta Daggers armed with the AIM-4 Falcon missile.

[citation needed] The 31st was redesignated as the 31st Tactical Reconnaissance Training Squadron and reactivated under Tactical Air Command (TAC) at Shaw Air Force Base, South Carolina in 1969, where it assumed the mission, personnel and equipment of 4414th Combat Crew Training Squadron, which was discontinued.