Flightline Work
ELLSWORTH AIR FORCE BASE S.D. – Airman 1st Class Joshua Radford, 28th Aircraft Maintenance Squadron crew chief, opens a panel on a B-1B Lancer, Aug. 3. After opening the panel, crew chiefs check hydraulic and nitrogen levels of the B-1 to ensure mission effectiveness. (U.S. Air Force photo/Airman 1st Class Corey Hook)