Two of my buddies were scouting Devil's Castle at late dusk...with no NVGs. They crawled under a pine tree and were just looking it all over as best they could in the almost total darkness when they heard a can pop, right on top of them. Friend #1: "Did you just take a drink?" Friend #2: "Nope. That wasn't you?" Friend #1: :NOPE, NOT ME!!!" They debate (on teamspeak) the best course of action...wait, pull out, run like hell? Then they hear someone moving, and one of them dies! No shot, he just dies. My other friend jumps up and runs like hell, as he just figured out what happened...another person was hiding under that same tree in the dark, and had just stepped on the other friend's head! Probably it was a complete accident, but I can just see some guy with NVGs on doing it all on purpose just to scare the crap out of them.