Fuels Airmen inspect, maintain fuel cleanliness
Senior Airman Christian Ramirez, 2nd Logistics Readiness Squadron fuels laboratory technician, places a membrane filter on the analytical balance scale on Barksdale Air Force Base, La., Nov. 5, 2013. The scale is used to weigh the filter paper before and after sampling, giving the amount of particulate found in one gallon of fuel. (U.S. Air Force photo/Senior Airman Joseph A. Pagán Jr.)