F135 testing resumes in J2
Testing of an F135 engine with a new rotor design is continuing in the J2 test cell of the Engine Test Facility at Arnold Air Force Base, Tenn. The engine is shown in the test cell in this image taken Sept. 2, 2020. (U.S. Air Force photo by Jill Pickett)

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Photo by: Jill Pickett |  VIRIN: 200902-F-KN521-1021.JPG