U.S. Air Force Senior Airman Jason Stach, 28th Aircraft Maintenance Unit B-1 aircraft technician, observes a B-1B Lancer during an engine warm-up May 3, 2016, at Dyess Air Force Base, Texas. As part of his job, Stach must perform basic maintenance on the aircraft and inspect it and its components prior to any flight. Stach has been working on the B-1 since he was first stationed here in March 2013 as an inspector in the isochronal hangar and now as an aircraft technician. (U.S. Air Force photo by Senior Airman Alexander Guerrero/Released)