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Staff Sgt. Darion Hubbard, 372nd Training Squadron F-16 Fighting Falcon crew chief instructor, seated, teaches his F-16 Right Time Training class basic aircraft maintenance procedures, Nov. 17, 2020, at Luke Air Force Base, Ariz. While on the flightline, F-16 crew chiefs attending RTT class learn how to refuel aircraft, take oil samples, perform inspections and more. The RTT class is a new initiative to provide small group, instructor-led hands-on training for F-16 crew chiefs after they complete technical training. (U.S. Air Force photo by Airman 1st Class Brooke Moeder)

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Photo by: Airman 1st Class Brooke Moeder |  VIRIN: 201117-F-ZR251-2004.JPG