another guy i worked for at the same company was responsible for his plane's failure to take part in the monte cassino mission. they flew the bomb run, but the doors wouldn't open. the only relief station on those old bombers was to go down into the bomb bay, and let the urine flow through the cracks in the bay doors. well, without noticing, he had peed all over the latch switch, and it froze. after the aborted bomb run they had go out into the ocean, fly low enough for the switch to thaw, and bomb a school of fish.