Red Flag 171
Airman 1st Class Nathan Kosters, a crew chief with the 34th Aircraft Maintenance Unit, Hill Air Force Base, Utah, moves a halon bottle while fueling an F-35A Lightning II aircraft Feb. 7 during Red Flag 17-1 at Nellis Air Force Base, Nevada. (U.S. Air Force photo by R. Nial Bradshaw)

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Photo by: R. Nial Bradshaw |  VIRIN: 170207-F-OD616-0239.JPG