Gen. Martin Dempsey testifies about the impact on the Department of Defense should the U.S. enter into sequestration Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey testifies about the impact on the Department of Defense should the U.S. enter into sequestration during a hearing before the Senate Armed Services Committee in Washington, D.C., on Feb. 12, 2013. DoD photo by Scott Ash, U.S. Air Force. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 960304-M-VJY30-620.jpg Photo Gallery