NDU PRESIDENT Army Maj. Gen. Gregg F. Martin, right, president of the National Defense University, addresses the school’s Class of 2013 before introducing the keynote speaker, Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, on Fort McNair, Washington, D.C., June 13, 2013. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 537275-Q-ZTG05-284.jpg Photo Gallery