TEXT: George Shenkle poses after autographing the roundel on the side of a C-47A Skytrain April 18, 2015, at the Air Mobility Command Museum,  near Dover Air Force Base, Del. Shenkle signed the roundel in the same fashion that he and his fellow paratroopers signed  hours before jumping into Normandy, France on D-Day, June 6, 1944. (U.S. Air Force photo/Airman 1st Class Zachary Cacicia)