I would absolutely not try to get that pasture. Your horses will not be safe up there. Too secluded and too much shooting and one too many drunks. Don't do it! Your horses will get shot and likely die before you can get there, see them and get a vet way out there.
There are a great many things one has to be sure of when renting a pasture for horses - weeds that are bad for horses, poisonous trees(blank walnut, black locust, many others), people dumping debris or lawn clippings in them, condition of the fence and gates, proximity to fire station hydrants, vulnerability to flooding, a jillian things.
As far as 'elder abuse', sorry, that is not elder abuse.
It could be considered assault, possibly. Depends on more details of what happened. But say it was favorable - a drunken public nuisance, assault, threats to your property, yes. Go for that if you can.
If he took a step off his property, the landowner would have him in a number of counts.
However, out in the country, we don't usually call the cops on our neighbors. If we have a problem we try to work it out privately.
This one, however, won't be worked out privately, but it won't be worked out soon. The guy is a danger to himself, his family and his neighbors. However, they generally kill themselves driving or operating machinery while drunk.
The law generally doesn't have much it can do except arrest the guy over and over for public drunkenness, assault (low grade) etc.
I was in court once and saw a guy who had been arrested and convicted 80 times for that in the prior 18 months. What did the judge do? Gave him another drunk and disorderly charge, a couple more days in jail.
Now he's been arrested and convicted 81 times.
Ohhhh well.
