I like that kind of thing,
Once back in the day, an air force officer took a nut from a RF101 Recon jet to a machine shop in the local town.  The nut had a crack, so he was told to get a new on made at the local machine shop, to save time and support the local economy.  
So he demanded that the man make a nut the same,same,  He was very insistent,  So when he came back of course the net nut had a crack in exactly the same place.  Never under estimate the skill of the indigenous people or the arrogance of the American military,