" They started the hole in the hog pen, which was a permanent disturbance all by itself. Each hog weighed two hundred pounds, and each hog had four feet. The dirt was always chewed up. Nothing to see from the air, not even with a thermal camera. The picture would white out instantly, from the steaming animals themselves, and their steaming piles and pools of waste. Safe enough. "

― Lee Child , Make Me (Jack Reacher, #20)