Its last was assigned to the 6007th Reconnaissance Wing, stationed at Yokota Air Base, Japan.

Performed highly classified missions over the Soviet Union and Communist China and reconnaissance monitoring of the Korean De-militarized Zone (DMZ) during the early years of the Cold War.

The RB-57A-1s were RB-57A modified under Project Lightweight (later Project Heartthrob) with more powerful J65 engines, crew reduced from two to one, and all items not essential for the daytime photographic mission removed.

[1] Inactivated in 1957, mission taken over by the 67th Tactical Reconnaissance Wing Much of this unit's history remains classified as of 2012.

[2] This article incorporates public domain material from the Air Force Historical Research Agency Further reading