F-35A Lightning II aircraft sit on the flightline during an exercise at Hill Air Force Base, Utah, Jan. 6, 2020. A little more than four years after receiving their first combat-coded F-35A aircraft, Hill AFB’s fighter wings have achieved full warfighting capability. The exercise demonstrated the ability to employ a large force of F-35As – testing readiness in the areas of personnel accountability, aircraft generation, ground operations, flight operations and combat capability against air and ground targets. (U.S. Air Force photo by R. Nial Bradshaw)