This reminds me of something that happened to me a few years ago. I was using a mini excavator to remove some pines from the back 40. The property was over grown with weeds and brush but I was sitting higher than most of the undergrowth. On scooping out an 8 foot pine, I started to back up while turning when I noticed a body tumbling at the side of the track. With great pause I stared at a motionless person laying in the dirt. He suddenly leaped to his knees and started to warn me about explosive devices in the area. He represented himself as an FBI agent and started rambling. As it turns out he had been living on my property for some time. I told him I will call the local police for backup and they took him away. When he saw the police coming he had a tear in his eye and said he knew I was trying to do the right thing. The rest of the story was that his mother was a principal at our local public school and didn't even know he was missing. It seems he attended the local college and often stayed at friends houses etc.
jmf