You’ve got a point, but an argument can be made that unless you’ve got confirmation of a solid backstop or what lies behind a target, nobody should ever attempt to stop a threat with a gun.
Active shooter in a mall in your sights? I’d be a bit hesitant to open fire if bystanders are behind the perp. It all depends on the situation I guess. Sounds like the officers had poor coordination and communication, in this case.
In a fluid situation, where perp is not standing still and neither are the cops, how do you maintain that solid backstop and/or insure there is no one behind a wall?
It's a tough call.
Demanding constant, quality dynamic training with standards that have to be adhered to, is the only real solution to missing your target(s).
Now, will the taxpayers foot the bill to provide that level of training? Probably not.
Ed