North American built 44-74939 late in 1945. It was not delivered until July 1945 and never saw combat. The Army Air Forces first assigned the fighter to Andrews Field, outside Washington, D.C., and later to Freeman Field, Indiana. After eleven months and 211 flying hours of operational service, this Mustang was set aside as a museum specimen and later transferred to the National Air Museum. When NASM acquired this Mustang, it bore a proud admonition on both sides of the fuselage in large black letters: "Guard The Victory, Join the AAF." The airplane was probably used for recruiting drives