LEGION OF MERIT Air Chief Marshal Allan "Angus" Grant Houston, chief of Defense Force Australia, displays the Legion of Merit award he received from U.S. Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, during a luncheon ceremony in the Pentagon, May 11, 2011. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 121771-V-LQW29-704.jpg Photo Gallery