U.S. Air Force Senior Airman Jason Stach, 28th Aircraft Maintenance Unit B-1 aircraft technician, removes the inlet covers from the engines of a B-1B Lancer May 3, 2016, at Dyess Air Force Base, Texas. Stach is responsible for pre-flight inspections and maintenance on the B-1. This includes checking fluids such as fuel, oil and hydraulics, as well as landing gear and oxygen for the aircraft crew. (U.S. Air Force photo by Senior Airman Alexander Guerrero/Released)