Military Photo: Pratt & Whitney F135 Testing

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Posted: 12/02/2021

A Pratt & Whitney F135 engine undergoes accelerated mission testing in Sea Level Test Cell 3 at Arnold Air Force Base, Tenn., Nov. 15, 2021. The F135 is the engine used to power the F-35 Lightning II. (U.S. Air Force photos by Jill Pickett)

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