As the Air Forces of each country began to utilize night bombing, a series of night fighters were put into use to combat the threat. The American Army Air Force started its night fighter program in 1940, using the P-70 Havoc and Beaufighter to fight with the Japanese until the first 45 P-61 Black Widows entered active service in October 1943.

With the introduction of the more powerful SCR-720C Airborne Intercept radar the P-61s of the Army were upgraded and designated as the P-61B. The type B also lengthened the nose section and reintroduced the dorsal turret on the late production aircraft.

Includes markings for:

• USAAF, 547th Night Fighter Squadron, P-61B-1-NO "Swing Shift Skipper", 239440 (42-39440)
• USAAF, 6th Night Fighter Squadron, P-61B-2-NO "Sleepy Time Gal II", 239414 (42-39414)