U.S. Army Gen. Martin E. Dempsey, left, the chairman of the Joint Chiefs of Staff, presents a Defense Distinguished Service Medal to U.S. Marine Corps Gen. Joseph F. Dunford Jr., the outgoing commander of the International Security Assistance Force and U.S. Forces-Afghanistan, during a change of command ceremony in Kabul, Afghanistan, Aug. 26, 2014. Dunford formally relinquished command to U.S. Army Gen. John F. Campbell during the event.