I concure Gingivitis.
I can also see where that landowner is coming from. Up until recently I pretty much only shot by myself and did not see alot of other trad guys shoot. I have been to a couple of shoots and shot the courses with guys I met there and tagged along. Now, I just want to say that I am no expert and I am not an "awsome shot" but the guys I shot with were horrible. Broken arrows and misses measured in feet and every target were the norm. My point is that if that landowner ran into some one like that he has a reason to be skeptical.