The video I’m finding interesting at the moment is this one: Dropbox
This is the one I know as the dashcam of the cop who arrives very early. You see officers run to the right, where Tedeski is going to boost the other guy up. After falling down, he runs around the back of the car, so he is not seen. But you hear him open the door when he comes back to the car to get his rifle.
18:11:30 shots ring out
18:13:24 Nichol opens the door and comes out with pistol drawn
18:15:02 Nichol seems to try to open the door, but can’t
18:15:20 another officer opens the door somehow. Nichol seems concerned to be the first one in the door