A color guard with U.S. and NATO service members participate in a change-of-command ceremony in Kabul, Afghanistan, March 2, 2016. Marine Corps Gen. Joseph F. Dunford Jr., right, chairman of the Joint Chiefs of Staff, and Army Gen. Lloyd J. Austin III, left, commander of U.S. Central Command, attended the ceremony during which Army Gen. John F. Campbell relinguished command to Army Gen. John W. Nicholson Jr. DoD photo by D. Myles Cullen