Staff Sgt. Timothy Andrews, NCO in charge of the fuels lab for the 1st Special Operations Logistics Readiness Squadron, weighs membrane filters at Hurlburt Field Fla, Oct. 25, 2016. Membrane filters collect sediment during testing as a limited amount of residue is allowed in petroleum when used in vehicles to keep from damaging engines.

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Keywords: 1, 1solrs, air, airmen, america, archive, armed, army, commandos, defence, field, force, forces, fuel, hurlburt, military, navy, posey, reportage, service, serviceman, servicemen, soldier, sow, states, united, usa