Three of my friends and I were raiding the hospital and tents in Cherno when we heard a helicopter. I myself shot several M14 rounds directly into the cockpit driver's side to no effect. ZEUS then hovered high above the hospital for several minutes before crashing, though he survived the crash. We killed him and he had no belongings besides a pair of NVGs. Several minutes later we were regrouping inside the hospital when fully automatic shots from a very nearby but invisible source hit all of us, killing two. We're sure that this was ZEUS killing us for revenge after dowing his chopper and taking his NVGs