A full-scale model of a C-5 Galaxy cockpit, called a combined avionics systems trainer, or CAST, will be used by instructors at Dover Air Force Base, Del., to help train maintainers who will fix avionics systems on the C-5. The trainer comprises five separate sections including a forward cockpit station, navigator station, an aircraft silhouette, an avionics station and an instructor station. (U.S. Air Force photo/Senior Airman James Bolinger)