Karen Kwong, Air Force Petroleum Agency chemist, prepares the Jet Fuel Thermal Oxidation Tester to run a sample in the Quality Surveillance Fuels Lab at Wright-Patterson Air Force Base, Ohio, Jan. 25, 2018. This instrument models the conditions that fuel is exposed to inside of an aircraft during flight to measure the thermal stability of a fuel sample. ( Air Force photo by Michelle Gigante)

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Keywords: aerospace, agency, air, aircraft, fluid, foam, force, fuels, hydraulic, lab, packaged, petroleum, products, test