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 SHARE: Download: Full Size (1.4 MB) Tags: Marines, retirement, Chairman, joint staff, Dempsey, Carter, SecDef, change of responsibility, president, Dunford, Army, All images Credit: Petty Officer 2nd Class Dominique Pineiro VIRIN: 150925-D-PB383-015.JPG Photo Gallery