An F-15 Eagle engine test
Aerospace propulsion technicians assigned to the 48th Maintenance Group test an F-15 Eagle engine at RAF Lakenheath, United Kingdom, Feb. 5, 2020. Engines are tested inside of “hush houses” to minimize noise and provide a safe area for maintainers to inspect them. (U.S. Air Force photo by Airman 1st Class Madeline Herzog)

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Photo by: Airman 1st Class Madeline Herzog |  VIRIN: 200205-F-ZB805-9187.JPG