U.S. Marines perform a foreign object damage, or FOD, walk before a routine maintenance check on Marine Corps Air Station Cherry Point, N.C., July 10, 2015. The walk maintains cleanliness and safety on the flight line and within squadron hangars. U.S. Marines perform a foreign object damage, or FOD, walk before a routine maintenance check on Marine Corps Air Station Cherry Point, N.C., July 10, 2015. The walk maintains cleanliness and safety on the flight line and within squadron hangars. SHARE: Download: Full Size (1.891623 MB) Tags: Photo Essays Credit: VIRIN: 048554-H-FZW42-953.jpg Photo Gallery