Members of the 461st Flight Test Squadron perform preflight checks on an F-35 Lightning II participating in the large-scale test event Orange Flag 21-2 at Edwards Air Force Base, Calif., June 24, 2021. Orange Flag 21-2 is the nation’s premier multi-domain test event in combination with Eglin Air Force Base’s Emerald Flag, which brings night-one combat advantage to our warriors in the field. (Lockheed Martin photo/Chad Bellay)