LANGLEY AIR FORCE BASE, Va. -- Senior Airman Victor Sylvan, 1st Equipment Maintenance Squadron low observable aircraft structural maintenance journeymen, removes a panel from an F-22 Raptor in preparation to apply low observable coatings. Low observable is the process of a coating stack being applied on an F-22 that makes it invisible to radar, and allowing the aircraft to remain undetected, removing of the panels is one of the many steps in the LO process. (U.S. Air Force photo/Senior Airman Dana Hill)