Agreed, they broke policy when they fired upon him in the direction of other officers and their mistakes led to them believing that the suspect has a gun.
That's all on them and in no way, shape, or form excuses their shooting of him for mistakenly believing he had a gun because they were fucking shooting at each other.
I've never said any of this (nor has anyone else in this thread), but you're free to continue making shit up if you'd like.