U.S. Marine Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff; Tom Kelly, U.S. ambassador to Djibouti; and U.S. Army Maj. Gen. Mark Stammer, commander of Combined Joint Task Force Horn of Africa, greet one another upon Dunford's arrival in Djibouti, Dec. 6, 2015.. DoD photo by D. Myles Cullen