Sharon Blair, second from right, mother of U.S. Navy Petty Officer 2nd Class Mark Mayo, of Hagerstown, Md., puts her hand on her sons casket during his burial at Arlington National Cemetery in Arlington, Va., Friday, April 25, 2014. Mayo was killed aboard the USS Mahan at Naval Station Norfolk, Va., after he dove in front of another sailor to protect her from a civilian truck driver who had seized her gun. Mayo was awarded the Navy Marine Corps Medal, the highest non-combatant decoration for heroism by a sailor or Marine. (AP Photo/ Evan Vucci), APTOPIX