Tom Higgins, Vietnam veteran and former Air Force H-21 pilot, renders a salute as Air Force Special Tactics Airmen pass by during the Tim Davis Memorial March in Weimar, Texas, Oct. 17, 2011. 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. (U.S. Air Force photo by Staff Sgt. Sharida Jackson)