Chaplain candidates take part in a memorial service July 15, 2008, at Pad 34 Apollo Saturn. The pad is the site of the Jan. 27, 1967, tragic flash fire that took the lives of three astronauts during a launch pad test of the Apollo/Saturn space vehicle preparing for the first piloted flight, the AS-204 mission. The candidates began a 28-day tour of military bases in the Southeast on July 12 to learn more about missions supported by the Air Force. (U.S. Air Force photo/Capt. Tricia Hill)