We’re just going to do a thought experiment here: What if: the pile of bodies was already there and the plan was for him to shoot up these bodies, but the bodies were already dead. Also, what if you had your accomplices that helped stage everything take roles to “get shot”. Maybe it is rehearsed a bit, maybe not, but they are told that blanks will be used so the gunman will change magazines between the blanks for them and the real bullets for the corpses. But then instead of using blanks, the gunman uses real ammo the whole time. He kills a few people who were in on the operation and thereby reducing risk that someone talks later? Anyone in there would think it’s playing out as planned and it would take too long to figure out he is actually killing people. Once again, not saying that this is what happened, and he definitely hit people in the 17 minute version when he comes back in. The woman outside is moving, you can see her roll over the curb. A piece of her head goes flying when he shoots her. So that happened. People died.