I have stopped people from going into "hot" indoor ranges without hearing protection. This happened the very same day all the other safety laws were infracted upon as mentioned in the first posting.
I sincerely don't believe I will be attending that indoor range and will allow my membership to expire. It is not worth the effort.
1. Treat every firearm as if it were loaded.
2. Never point a firearm at anything you do not intend to shoot.
3. Keep the finger off the trigger and firearm on safe until ready to shoot.
4. Know the target and what's beyond it.