A U.S. Marines prepare to launch an F-35B Lightning II aircraft, assigned to the Marine Medium Tiltrotor Squadron 164 (Reinforced), 15th Marine Expeditionary Unit, by conducting a foreign object debris clearance walk during an Air Forces Central Agile Combat Employment Capstone event at Al Udeid Air Base, Qatar, March 3, 2021. The F-35B Lightning II is the U.S. Marine Corps variant of the 5th generation fighter. The capstone event enhanced theater ACE competencies, validating operational capabilities and command and control while simultaneously strengthening joint and regional partnerships. (U.S. Air National Guard photo by Tech. Sgt. Brigette Waltermire)