U.S. Army Gen. Martin E. Dempsey, center, chairman of the Joint Chiefs of Staff, presents a Legion of Merit award to Canadian Air Force Gen. Thomas J. Lawson, chief of the defense staff of Canada's armed forces, during the U.S.-Canada Defense Chiefs Strategy Dialogue at the National Defense University in Washington, D.C., June 4, 2015. U.S. Army Gen. Martin E. Dempsey, center, chairman of the Joint Chiefs of Staff, presents a Legion of Merit award to Canadian Air Force Gen. Thomas J. Lawson, chief of the defense staff of Canada's armed forces, during the U.S.-Canada Defense Chiefs Strategy Dialogue at the National Defense University in Washington, D.C., June 4, 2015. SHARE: Download: Full Size (1.2 MB) Tags: Photo Essays Credit: VIRIN: 777713-T-FWC79-501.jpg Photo Gallery