On a road trip in eastern OR some years ago I was travelling on Hwy 31 that runs SE of La Pine into what I think was the Deschutes Nat. Forest. As I drove down the hwy I saw several dirt roads go off into the forest on both sides of the hwy. I decided to pick one of them to bivy by. I drive the dirt road I picked about 0.5 mile into the forest and pitch my tent a few feet away from it, since there was some room. This is at about 9pm. I proceed to do some reading, but about a half-hour later I hear some cars go slowly by. I had hoped that I would get this road for myself, but oh well. The cars drive on for about 10 minutes or so, and then are turned off. Not long after that I start hearing the occasional gunshot. This bothered me some, knowing that the cars weren't really that far away. However, it was when they brought out the heavy artillery that I started to really become concerned, especially when I started hearing machine gun fire. I decided that I was not going to waste any more time there and threw my tent into the truck and drove off to La Pine for a motel room.