Leader Testimony Defense Secretary Ash Carter, foreground, and Marine Corps Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, testify before the House Armed Services Committee about U.S. strategy for Syria and Iraq in Washington, D.C., Dec. 1, 2015. DoD photo by Air Force Senior Master Sgt. Adrian Cadiz SHARE: Download: Full Size (0.85 MB) Credit: Senior Master Sgt. Adrian Cadiz VIRIN: 151201-D-DT527-130.JPG Photo Gallery