One summer we were hiking up to Zealand and met some rangers. Someone had stayed at the Highland Center, taken the shuttle to the Zealand parking lot, and was supposed to hike back. Never came back. A staffer had the sense of mind to go into the Highland Center's parking lot to see if his car was still there. It was, and there was a suicide note on the dashboard.
The ranger explained to us that they were conducting a "soft search," which means that they were covering the trails, but if the man went off into the woods, they weren't going to look for him.
Brian