Interlopers come in various shades, some have nefarious operations in progress. The most dangerous brand are the dope growers. One of my younger relatives was flyfishing with a friend, minding their own business, hunting trout in a small stream. A cammo'ed creature with a plastic rifle popped up and threatened them. They left, of course. However being "Family" they stewed some and went back. Short version, things got, well, burnt. That form of activity appealed to the younger set, recons were done, more things were torched. Ah, but all fun must end. While wandering around in a patch, spraying diesel on plants, a large hand attached to a cammo'ed creature snatched this young lad off his feet and left him staring at, a Cop. The Cammo'ed Cop told the lad to finish what he was doing and never do it again. Not known for his wits, the kid did stay out of trouble.
Having encountered bullets myself, they are best avoided. I have on occasion returned fire, that generally allows the other guy time to reflect and quit shooting.
Such was life in Humboldt.