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
the girl next to white shirt guy fiddling with invisible gun never looks to her left at time of supposed recoil/sound--as they don't make silent rounds..all humans will look toward source of percussion and jump back
