Staff Sgt. Matthew Peterson, 388th Aircraft Maintenance Squadron, marshals an F-35A Lightning II during an F-35 Crew Chief Upgrade training course at Hill Air Force Base, Utah, Aug. 21, 2020. The course was jointly developed by the 372nd and the 388th Maintenance Group to help alleviate training backlogs for new maintainers. The three-week course will help participants progress from 3-level to 5-skill level. (U.S. Air Force photo by R. Nial Bradshaw)
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