Air Force Tech. Sgt. William Cook, 18th Component Maintenance Squadron aerospace assistant section chief, checks a valve on a F100/220 engine March 10, 2017, at Kadena Air Base, Japan. Whenever a new core is installed, the entire unit goes through a “break-in” process where Airmen from the 18th CMS put the engine through a variety of tests involving potentially real-world requirements it may face. ( Air Force photo by Airman 1st Class Quay Drawdy)

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Size: 6016px × 4016px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: maintenance