Senior Airman Marcus Middlebrooks, 51st Logistics Readiness Squadron fuel hydrants operator, checks a fuel filter separator at Osan Air Base, Republic of Korea, Aug. 6, 2014. The filter separators can push 2,400 gallons of fuel a minute to make sure it is free of sediments, dirt and water. (U.S. Air Force photo by Senior Airman Matthew Lancaster/Released)