Maintainers with the 421st Aircraft Maintenance Unit leave the ramp after launching F-35A Lightning II fighter jets during Red Flag 20-1 at Nellis Air Force Base, Nev., Feb. 3, 2020. 421st maintainers are part of the Lightning Technician Program and working to be fully qualified in a number of different F-35 maintenance areas instead of just one. (U.S. Air Force photo by R. Nial Bradshaw)