When the cops finally breached the classroom at Robb elementary... [View all]

... they didn't take any casualties doing so.
Is that right?

Well, if that is correct, was the shooter already dead?
Was the shooter incapacitated somehow?
Was the shooter surrendering?

I have no quarrel with the guys who breached that classroom, whatever happened.

Since there were no casualties among the force that breached the classroom, it really makes the cops that sat their on their thumbs for an hour look worse!
Who trained those people?