When you have a careless system, those "snap decisions" are generally careless.
I’ve been a LEO for over 13 years. In my department no one comes off the line unless your weapon is holstered with the slide racked back, your hands are behind your back, and the range safeties have given the tower the all-clear. If you even bend down to pick up a magazine before the tower tells you to do so, you are failed and have to come back another day. If you hand an instructor a loaded weapon during gun-check or before gun-cleaning, you are punished as well. All these safety measures, and there are still negligent discharges and other mistakes. But this story is beyond the pale.