Fire Controlman 3rd Class Sean Higgins attaches a safety line to the harness of Fire Controlman 3rd Class Douglas O’Neil before entering the water during a man overboard drill aboard guided-missile destroyer USS Mason (DDG 87). Mason is deployed as part of the Harry S. Truman Carrier Strike Group and will be supporting maritime security operations and theater security cooperation efforts in the U.S. 6th and 5th Fleet areas of operation.