Four of the five living Doolittle Raiders during a memorial service in honor of their 70th Anniversary Reunion, which was held at the National Museum of the U.S. Air Force, Dayton, Ohio, on April 17-20, 2012. From left to right are Lt. Col. Edward J. Saylor, Maj. Thomas C. Griffin, Staff Sgt. David J. Thatcher and Lt. Col. Richard E. Cole. (U.S. Air Force photo/Jeff Fisher)