I once saw a western movie where the good guy was sitting at the bar and a bad guy was sneaking up behind him, knife in hand. The good guy didn't even turn around just drew his pistol and while looking in the bar room mirror, shot the knife out of the bad guys hand.
Now, why didn't the cops just do that in this case?
The good guys always shoot the bad guys in the hand.
Officer Ried did not have a mirror or he would have for sure.