My only concern was that the shooter was absolutely certain there was no one (especially me) in his line of fire. The land here is essentially flat. If there was a hill or berm to serve as a barrier, I hadn't encountered it in my campsite-finding wanderings. The trees aren't very dense, so there's a possibility of bullets threading between them and hitting someone way down range—someone that wasn't seen because folks don't generally wear safety orange when it's not hunting season.
The firing stopped after a while, after about a box of shells. I was fine. I hope everyone else was, too.