Master Sgt. Matthew Carey stands by an illustration of several B-17 Flying Fortress bombers on a mission during World War II displayed in the hallway outside his office June 2, 2014, at Ellsworth Air Force Base, S.D. Carey said the image reminds him of his grandfather, B-17 tail gunner Staff Sgt. James “Rae” Carey, and his experiences after he signed in for duty at a base in England one day after the invasion of Normandy began. Carey is the 28th Bomb Wing Treaty Compliance Office superintendent. (U.S. Air Force photo/Senior Airman Yash Rojas)