Hydraulics Airmen keep tankers in the sky
U.S. Air Force Senior Airman Robert Summerville, 100th Maintenance Squardon hydraulics technician from New Castle, Penn., removes corrosion and sealant from a KC-135 Stratotanker boom nozzle Aug. 11, 2015, on RAF Mildenhall, England. Summerville was doing this as part of a required inspection. (U.S. Air Force photo by Senior Airman Christine Halan/Released)

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Photo by: Senior Airman Christine HalanReleased |  VIRIN: 150811-F-WZ808-098.JPG