U.S. Coast Guard Adm. Robert J. Papp Jr., right, commandant of the Coast Guard, shakes hands with Lt. Cmdr. Robert Potter, center, during the MH-65D Dolphin helicopter 6535 memorial dedication ceremony at the Coast Guard Aviation Training Center in Mobile, Ala., March 1, 2013. The memorial commemorated the loss of the crew when their helicopter crashed during a nighttime training flight in Mobile Bay.