Senior Airman Esther Kim, left, Staff Sgt. Austin Taylor, center, and Airman Raymond Harrison, assigned to the 319th Aircraft Maintenance Squadron as avionics specialists, work together to perform electrical preflight checks on an RQ-4 Global Hawk at Grand Forks Air Force Base, N.D., Sept. 22, 2020. Avionics specialists work alongside crew chiefs with the 319 AMXS to refuel a Global Hawk and perform regular maintenance prior to every flight the aircraft makes. (U.S. Air Force photo by Senior Airman Elora J. McCutcheon)