Members of the U.S. Army Band "Pershing's Own" perform at the retirement and change of responsibility ceremony for the 18th Chairman of the Joint Chiefs of Staff U.S. Army Gen. Martin E. Dempsey at Joint Base Myer-Henderson Hall in Washington, D.C., Sept. 25, 2015. Dempsey retires from the military after 41 years in service. DoD photo by Petty Officer 2nd Class Dominique A. Pineiro