I babysat for a military fighter jet mechanic when I was young, he said when they dismantled and rebuilt planes there was a drawer for all the spare parts that were left over.
It's crazy to think someone with that complex of a job needs to be babysat
Rap's Law of Inanimate Reproduction[1] strikes again!
[1]: "If you take something apart and put it back together again enough times, eventually you have two if it."