Arlington Honors Defense Secretary Ash Carter and Australian Prime Minister Malcolm Turnbull render honors as they place a wreath at the Tomb of the Unknown Soldier at Arlington National Cemetery, Arlington, Va., Jan. 18, 2016, DoD photo by Senior Master Sgt. Adrian Cadiz SHARE: Download: Full Size (1.26 MB) Credit: Senior Master Sgt. Adrian Cadiz VIRIN: 160118-D-XT155-004.JPG Photo Gallery