From an airfield west of London, Richard Rohmer flew southwards out over the English Channel on the morning of June 6, 1944. Off to his left, the sun was rising over occupied France, and he was going to take pictures for Allied intelligence to guide the invasion. The joystick in his single-engine Mustang fighter plane had a button to control a camera, as well as the guns. He was flying as the second in a formation of two, but here in the cockpit, he was alone, watching a turning point in modern history and feeling confident in its outcome.