Sailors looking for foreign object debris (FOD). FOD is any loose object which can be moved through the air during flight operations. Even small pebbles the size of peas can cause great damage.

"FOD is the responsibility of all hands," every sailor will say it. "FOD can be one of the most dangerous things on the flight deck or in the hangar bay."

A piece of FOD ingested into an engine can cause engine failure and possibly the loss of the helicopter or the aircrew. Additionally, propellers, rotors and engines can blow the FOD through the air, something which can injure Sailors.