Tom Higgins renders a salute as special tactics Airmen march by Oct. 17, 2011, in Weimar, Texas, during the Tim Davis Memorial March. The 812-mile march, which began in San Antonio, Texas, honors fallen special tactics Airmen and will span across five states before ending at the Special Tactics Training Squadron at Hurlburt Field, Fla., Oct. 26, 2011. Higgins is a Vietnam veteran and former Air Force H-21 Shawnee pilot. (U.S. Air Force photo/Staff Sgt. Sharida Jackson)