He fired 4 at Rosenbaum, 1 miss at the jumper, 1 at skateboarder, 1 at fake medic's fake bicep. There looks to be a jam cleared before the final shot. So that is a minimum of 7 (or 8) and he may have fired some of the other shots that can be heard while running and retreating toward the police, or maybe some while there isn't any footage.

If the multiple armored cop vehicles weren't so close, he would have been ambushed again.

Here is the minimum he fired. 4 at Rosenbaum, 1 miss at the jumper, 1 at skateboarder, 1 at fake medic's fake bicep. There looks to be a jam cleared before the final shot. So that is a minimum of 7 (or 8) and he may have fired some of the other shots that can be heard while running and retreating toward the police, or maybe some while there isn't any footage.

If the multiple armored cop vehicles weren't so close, he would have been ambushed again.