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Francesco Di Carlo paints the tail end of an F-16 Fighting Falcon Aug. 13, 2013, at Aviano Air Base, Italy. Corrosion control focuses on preventative maintenance by sanding down and repainting aircraft through the use of special polyurethane paint, which helps protect the metal from environmental stressors. Di Carlo is a 31st Maintenance Squadron corrosion technician. (U.S. Air Force photo/Senior Airman Jessica Hines)