Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, speaks with U.S. Sen. Carl Levin of Michigan, right, during the Reagan National Defense Forum at the Reagan Presidential Library in Simi Valley, Calif., Nov. 16, 2013. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, speaks with U.S. Sen. Carl Levin of Michigan, right, during the Reagan National Defense Forum at the Reagan Presidential Library in Simi Valley, Calif., Nov. 16, 2013. SHARE: Download: Full Size (3.04 MB) Tags: Photo Essays Credit: VIRIN: 152155-K-EHF62-378.jpg Photo Gallery