Robert Bills, Aerospace Fuels Lab chemist, examines an image collected from a scanning electron microscope in the Investigative Analysis Lab at Wright-Patterson Air Force Base, Ohio, Feb. 13, 2018. The image helps piece together the identity of unknown solid materials for safety investigation boards to deduce reasons of an aircraft mishap. ( Air Force photo by Michelle Gigante)

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Keywords: aerospace, analysis, chemist, chemistry, chromatogram, electron, fluid, fuels, hydraulic, investigative, lab, microscope, routine, scanning