Spray painting circles around sheet metal punctures
I remember working at an explosives test range. These days, they're interested in testing car bombs there, but in the days of yore they were interested in improving land-mine lethality. They would ring a bomb with metal sheets and detonate the device. Our job was to take the metal sheets and spray paint circles around the punctures caused by expertly-crafted shrapnel. It was above our pay grade to determine the shrapnel patterns, so we tried to avoid suspicion by remaining indifferent to these kinds of abstract intellectual matters. They would reuse metal sheets to save money, so we used different varieties of spray paint to distinguish which holes were attributable to which test. After repeated uses the sheets resembled modern art.

Handling bombs was above our pay grade too. Shortly after I left, an unfortunate static discharge blew up a shell while my supervisor was handling it. We clambered into a tank once, and turned the key to start it. It would have started too, but we stopped immediately, because we realized a random tank rolling around the adjacent golf course would be certain to attract attention. We used to ride around in an old ambulance, but someone failed to set the hand brake once, and I understand it pitched end over end down a mountain side. Wish I had seen that.
(Perv With A Dog had his eyes pecked out by scrub jays on, Sat 12 Jul 2014, 8:42, Reply)