Foreign object damage on a military aircraft is a serious issue. Before every mission, the entire flight crew, which is five personnel on a CH-47, checks for foreign object debris (FOD) and ensures the aircraft is ready for the mission. Depending on the crew, preflight can take anywhere from 30 minutes to an hour and a half. It is supposed to be a thorough process. During deployments, however, you get into a battle rhythm and things can go unnoticed due to the monotony of day-after-day operations. In any military aviation setting, that can be devastating.