Gen. Dempsey speaks during the Department of Defense National POW/MIA Recognition Day Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey speaks during the Department of Defense National POW/MIA Recognition Day ceremony at the Pentagon in Arlington, Va., on Sept. 20, 2013. The ceremony pays tribute to those service members who have not returned from the battlefield and those who are held captive as prisoners of war. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 011821-W-AMC02-913.jpg Photo Gallery