A North American B-25 Mitchell medium bomber, serial number 112823, banks over rugged mountain terrain during a World War II-era test or training flight. The plain white star insignia, used before mid-1943, helps date this image to the early years of the war. The B-25 became one of the most versatile American bombers of the conflict, famously used in the 1942 Doolittle Raid on Japan. Project: 218215