U.S. Air Force Senior Airman Nancy Sierra, 1st Maintenance Squadron, munitions controller, works on a computer at Joint Base Langley-Eustis, Virginia, Feb. 25, 2020. Sierra plays an important part in the coordination of the 633rd Air Base Wing Security Forces and the fire department while moving vital equipment. (U.S. Air Force photo by Airman 1st Class Sarah Dowe)