CHIEFS' SALUTE U.S. Army Gen. Martin E. Dempsey, left, chairman of the Joint Chiefs of Staff, and Canadian Forces' Chief of the Defense Staff Gen. Thomas J. Lawson, right, render honors before participating in U.S. - Canada Defense Chiefs Strategy Dialogue at National Defense University's Roosevelt Hall on Fort McNair in Washington, D.C., June 26, 2013. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 259739-D-XWP61-087.jpg Photo Gallery