The B-17's capacity to repel enemy attacks and still inflict heavy damage to the German war machine and production centers is imaginatively rendered by C.R. Greening in this colorful caricature. Completed by Lt. Col. C. Ross Greening while prisoner at Stalag Luft I, Barth Germany in 1944-1945, this work is part of a collection of artwork that was published after the war in his book titled "Not As Briefed." (U.S. Air Force photo)