Army Maj. Gen. Bradley A. Becker, right, commanding general of Joint Force Headquarters National Capitol Region and the U.S. Army Military District of Washington, shakes hands with Air Force Gen. Paul J. Selva, vice chairman of the Joint Chiefs of Staff, at Arlington National Cemetery in Arlington, Va., Feb. 10, 2016. Selva and Becker met to welcome Canadian Governor General David Johnston, who visited the cemetery to honor U.S. and Canadian service members. DoD photo by Army Staff Sgt. Sean K. Harp