U.S. Air Force Senior Airman Jason Stach, 28th Aircraft Maintenance Unit B-1 aircraft technician, places a safety pin in place to keep the front landing gear doors from closing during maintenance on a B-1B Lancer May 3, 2016, at Dyess Air Force Base, Texas. In order to become a B-1 aircraft technician, Stach had to go through a four-month technical school. Two months of that school consisted of basic aircraft maintenance and terminology and the remainder was hands-on training here at Dyess. (U.S. Air Force photo by Senior Airman Alexander Guerrero/Released)