CNN; "Air Force Roper emphasized to reporters that while the issue of the material and objects -- known as Foreign Object Debris, or FOD -- being left inside an aircraft as it comes off the production line is not a design or safety risk, it is a matter of great concern to the military"
lol, I remember, after a D check somewhere Far East, our techs found a flashlight in the stabilizer, 2 wooden planks in the #2 fuel tank which while floating around were bouncing off wiring and pumps etc(B744), guess isn't a safety issue in the US Air Force....