Department of Homeland Security Secretary Janet Napolitano presides as Adm. Robert J. Papp Jr., relieves Adm. Thad W. Allen as Coast Guard Commandant during the Coast Guard Commandant Change of Watch ceremony at Ft. McNair, May 25. During the ceremony Papp became the 24th Commandant of the Coast Guard. (U.S. Coast Guard photo by Petty Officer 1st Class Kip Wadlow)