If this is true and every office on the scene was that misinformed, it's still a systemic problem that requires a complete overhaul of the way police are trained and hired. This won't be fixed by punishing a few bad apples and then pretending the problem is solved.
What's the chances that of a sample of officers who responded, those 4 are the only ones who would have let this happen?
What's the chances that of a sample of officers who responded, those 4 are the only ones who would have let this happen?