"...small garbage bag (new & sterile)..."

New I can understand, sterile is hard to come by. When I was trained as an EMT, we had a large trama pad in our kits, we were trained to soak the pad with the saline we had, put that around the intestines, then cover the whole thing with the plastic bag the pad came in. There is no such thing as sterile outside of a hospital ER, for sure not out on the side of the road...