Just with Google I can't find any newer updates. Strange. In this case it does appear he at least did a lot of camping, hiking, etc. They stress that he was probably armed which leads me to think he probably had some gear. If he made it that far he at least would have had water.

Of course he's in that age range where a heart attack wouldn't be out of the question. But that wouldn't explain why they can't find his truck unless he ran off the road in some pretty remote area. Or wound up somewhere else.