You brought up some points that I hadn't thought of. Especially a recurring issue that I had addressed with the training staff a couple of times, specifically that everytime they did a dry training session in the church specified No Live Ammunition in the training area and everytime about half the class would show up with loaded weapons. As I mentioned earlier, they're volunteers they do what they want.
In this particular case they made everyone disarm and leave their weapons in the security office before entering the sanctuary. All the training that day was done with blue guns.
My apologies.