Wreath Laying Canadian Governor General David Johnston lays a wreath as Air Force Gen. Paul J. Selva looks on at the Tomb of the Unknown Soldier at Arlington National Cemetery in Arlington, Va., Feb. 10, 2016. Johnston also placed a wreath at the Canadian Cross of Sacrifice during his cemetery visit, honoring Canadian troops who served with U.S. forces. DoD photo by Army Staff Sgt. Sean K. Harp SHARE: Download: Full Size (0.96 MB) Credit: Staff Sgt. Sean Harp VIRIN: 160210-D-HU462-040.JPG Photo Gallery