[alfus21]

Are you talking about the video from the phone? If so, then the cops were still moving into position to make a run on the building. You see them advancing toward the building but being careful to try to keep cover so that they don't get shot. And not knowing where the shooter is, it is hard to watch all the windows. Vests don't stop a shot to the head/neck.

I agree. They also had no clue how many shooters there were either. Lots of factors in this one, and it's really hard to blame the police for not storming in there without even thinking about it.

People need to realize that nothing of this magnitude has ever happened in the history of the United States.