DEMPSEY'S SPEECH U.S. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, addresses service members gathered for a town hall during the annual USO holiday tour on Camp Leatherneck, Afghanistan, Dec. 10, 2013. Dempsey answered questions about current military matters and thanked service members for their sacrifices and successes in Helmand province. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 242838-F-GNV42-885.jpg Photo Gallery