My believed opinion is that the Policeman who fired that shot yesterday will be investigated thoroughly , interviewed, his clothes taken at time he was wearing and he will be left sweating for a period of time whilst it is decided if he carried out his actions lawfully.
I once went into a custody suite where a bloke brought in on drunk and disorderly has a massive heart attack and died. All sorts of ailments bless him and nothing could be done. I had nothing to do with him but was still investigated throughly as I happened to be in the acells in another matter.
So I give respect to my ex colleagues who take up armed duties as it's a hell of a responsibility especially when you take a shot .