Gen. Dempsey's Retirement
Front row, from left, Defense Secretary Ash Carter; President Barack Obama; Army Gen. Martin E. Dempsey, outgoing chairman of the Joint Chiefs of Staff; and the incoming chairman, Marine Corps Gen. Joseph F. Dunford Jr., attend a ceremony for Dempsey’s retirement and the chairman change of responsibility on Joint Base Myer-Henderson Hall in Arlington, Va., Sept. 25, 2015. DoD photo by Petty Officer 2nd Class Dominique A. Pineiro