The man in white under the tent is the killer. His entire security team sold him out. All four men send hand signals to each other while at a time loads of gun, raises it and fires it and you see a little tiny bit of smoke come from the man’s hand
I think the green shirt "eyes" with the wrap under his armpit needs review. Immediately after shot turns and moves out of frame clearing whatever he had folded under his arms while turning and exiting to the rear. Not towards Charlie or maintaining his position.
