This official U.S. Air Force photograph shows a Boeing C-97/KC-97 Stratofreighter, a four-engine transport and aerial refueling aircraft derived from the Boeing Stratocruiser airliner. Serving the Air Force from the late 1940s into the 1970s, the C-97 family provided vital cargo airlift and in-flight refueling support to Cold War-era bomber and fighter forces. Project: 218191