I used to post images of FOD walks, but stopped as they were not particularly interesting, but this one caught my eye.
PACIFIC OCEAN (Jan. 3, 2011) – Sailors conduct a foreign object Damage (FOD) walk down after an abandon ship drill aboard the aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson and Carrier Air Wing (CVW) 17 are on a deployment to the U.S. 7th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 2nd Class James R. Evans)