Life on the flight deck is dangerous and taxing. Spinning propellers, grease everywhere, and a stiff sea wind that never stops are just a few of the things that must be endured for many hours at a time. The night and bad weather throw a whole other set of problems into the mix. Yellow shirts are worn by aircraft handlers and aircraft directors that shuttle aircraft around the carrier’s tight and chaotic deck. Ordnance, fire fighters and crash crews wore red on the flight deck to indicate their job. Ordnancemen on flight deck crews often wore red helmets with a black stripe to differentiate them from firefighters and crash crewmen, who also wore red shirts and helmets.