One more.
This one happened to the boss, thankfully.
This was before satellite communication. My old boss was out trenching some lights for a football field. Everything had been marked or so he thought. He had gone about 150' when he noticed a phone cable that he had cut. Nothing was marked there, but he stopped and dug it up anyway. As he was down in the hole, holding the ends of the cable, someone yelled "Stop, right there". He looked up and there were 4 guys with
M-16's pointed at him. Turns out that simple phone cable was a Department of Defense communication cable to one of the local missile silos.
