Retired Lt. Col. Dick Cole, one of two surviving Doolittle Raiders, answers questions in the Hall of Heroes at the Pentagon, Arlington, Va., Nov. 5, 2015. The Doolittle Raid was designed to bolster American morale and provide the U.S. an opportunity to retaliate against Japan after their attack on Pearl Harbor. (U.S. Air Force photo by Staff Sgt. Carlin Leslie/Released)