As good stewards of Liberty and Freedom RTBA folks generally respect other people's property but you cannot account for those that will not assume responsibility for their own actions. For this reason most ranges (even outdoors) I've visited incorporate a liability clause in their range waiver that must be signed before using the facility. I would assume it is vetted by company attorneys as to be enforceable upon occurrence. Here's one:
"I agree to be held financially responsible for any damage or destruction to the range and/or range equipment. I also agree to be held financially responsible for all claims or demands by any third party individuals who are harmed due to my use of any firearm or my actions while on the range. I have read, understand and agree to abide by all posted Range Rules and as listed on the back of this form."
That one calls out tracer rounds as being prohibited and in this instance would be applicable if a tracer round was indeed determined to be the cause and the person breaking said rule was identified.
"I agree to be held financially responsible for any damage or destruction to the range and/or range equipment. I also agree to be held financially responsible for all claims or demands by any third party individuals who are harmed due to my use of any firearm or my actions while on the range. I have read, understand and agree to abide by all posted Range Rules and as listed on the back of this form."
That one calls out tracer rounds as being prohibited and in this instance would be applicable if a tracer round was indeed determined to be the cause and the person breaking said rule was identified.