Francesco Di Carlo, 31st Maintenance Squadron corrosion technician, 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. (U.S. Air Force photo/Senior Airman Jessica Hines)