Retired Air Force Col. Leo K. Thorsness, Congressional Medal of Honor Society president, addresses audience members at a ceremony marking the 150th anniversary of the Medal of Honor at the Pentagon's Hall of Heroes, Washington, D.C., March 25, 2011. Retired Air Force Col. Leo K. Thorsness, Congressional Medal of Honor Society president, addresses audience members at a ceremony marking the 150th anniversary of the Medal of Honor at the Pentagon's Hall of Heroes, Washington, D.C., March 25, 2011. SHARE: Download: Full Size (3.73 MB) Tags: Photo Essays Credit: VIRIN: 348298-E-DXA01-070.jpg Photo Gallery