They're both high-mileage, and probably both have replacement parts keeping 'em going. Bill Prindible, a veteran U.S. Army pilot who flew on D-Day, takes the controls of a C-47 Skytrain aircraft during a flight over Normandy, France, June 5, 2014, as part of the 70th anniversary of the invasion of Normandy. The morning of June 6, 1944, Allied forces conducted a massive airborne assault and amphibious landing in the Normandy region of France. The invasion marked the beginning of the final...