An Aug. 26, 2014, nighttime aerial view of Kabul, Afghanistan, where U.S. Army Gen. Martin E. Dempsey, the chairman of the Joint Chiefs of Staff, traveled to attend a change of command ceremony for the International Security Assistance Force and U.S. Forces-Afghanistan. U.S. Marine Corps Gen. Joseph F. Dunford Jr. relinquished command to U.S. Army Gen. John F. Campbell.