Who opened the drapes? Again!From what we see on screen, it seems most likely that the dead guys were dead before the shooting, left there to point toward New York* and Pentangeli. Michael, of course, knew better
Sure thing “red herring”
There was a car at the gates, driving off probably the killer of “the dead guys” escaping, just after the machine gun fire and Michael's guards were shouting Stop! Stop! then Halt! Also the sentry was slack leaving the gates open
