Chairman of the Joint Chiefs of Staff Gen. Dempsey awards a Purple Heart to a soldier Chairman of the Joint Chiefs of Staff Gen. Martin E. Dempsey, left, awards a Purple Heart to a soldier at Forward Operating Base Azim Jan Karez, Afghanistan, on Dec. 16, 2012. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 953935-N-FWA52-466.jpg Photo Gallery