A Pratt & Whitney F135 engine hangs in Arnold Engineering Development Complex (AEDC) Sea Level Test Cell 3 at Arnold Air Force Base, Tenn., between test runs Sept. 2, 2021. The F135, used to power the F-35 Joint Strike Fighter, is undergoing Accelerated Mission Testing in the AEDC facility in support of Component Improvement Program efforts. ( Air Force photo by Jill Pickett)

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Photo credit: © APFootage / Alamy / Afripics
License: Licensed
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Keywords: air, arnold, base, division, force, test