Update: Just completed the newly required safety session.
I found out that there were several incidents that happened. One of them, someone was shooting several shots over the berm with a high powered rifle. This was in a horseshoe pit meant for handguns and shotguns. A mother and kids were outside and could hear the bullets hitting the house. One bullet embedded in the bathroom wall.
The other, I know about, that somebody had a barn struck by a bullet. This could only have happened by that person angling their weapon away from the backstop.
There were a couple other selfish stupid acts that could have resulted in personal/property harm.
With the stricter rules and surveillance being planned, I would hope it is enough to prevent further occurrences. He said the range has spent approximately $70k, not including the volunteers hours and donated materials.
The instructor said the range is one stray bullet away from being shut down.
Plus there have been 3 other ranges in about a 50 radius that have had about the same issues.