KEESLER AIR FORCE BASE, Miss. -- Airman Gary Byrant (right) and Senior Airman Michael Freret, 403rd Wing crew chiefs, feed air pressure to the engines of one of the wing's C-130Js during a preflight inspection. This is just one part of the start-up sequence for the engines, one that crew chiefs perform during each preflight check in preparing the planes for takeoff. (U.S. Air Force Photo/Tech. Sgt. Ryan Labadens)