Air Force Staff Sgt. Matthew Merchant, of the 165th Aircraft Maintenance propulsions shop, performs maintenance on a valve housing assembly at the 165th Airlift Wing, Savannah, Ga., Sept. 13, 2015. The valve housing assembly operates as the “brain” of the propeller by performing commands communicated from the aircraft’s flight deck. The New Englander from Burlington, Vt., is a seven-year veteran of the wing’s propulsions shop. (Air National Guard photo by Senior Airman Chelsea Smith/Released)

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Size: 7360px × 4912px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, guard, national