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Airman 1st Class Matt Fitch, 100th Logistics Readiness Squadron Petroleum, Oils, and Lubricants apprentice, verifies water being extracted from fuel through a sight glass March 26, 2009, at RAF Mildenhall, England. The Amarillo, Texas, native verifies five 600-gallon fuel filter separator sumps daily to ensure aircraft fuel are completely free of foreign contaminates and water, so that they are safe for aircraft use. (U.S. Air Force photo by Staff Sgt. Jerry Fleshman)