Presenting a problem coupled with a solution was a good approach. Assigning someone with ultimate authority, and a safety officer is a good idea. Safety officer would be given the authority make sure safety rules like no live ammunition were cordially but firmly enforced. The safety officer would also to bar armed visitors to the training area, and invite them into the training area, without ammo. Another responsibility of the safety officer is to make sure everyone reloads, and goes "street live" properly and safely, when leaving the training area. Encouraging words such as, "Good job" and "that's the way", go a long way in assuring voluntary safety compliance.