I can see taking it off during the day, but would you leave it behind? If he was going to come back and get it, wouldn't you mark the territory with something (not your wallet)? Why leave the wallet there, if he was being chased by a cat or bear, you would think there would be signs of panic, broken sticks, weeds pushed over, foot prints or something. If he was going to leave a clue you would think he would have made a flag out of the f lease and put the wallet under the flag. I don't know, with out much detail it's hard to say. Steve is a long time survivor and I would expect a lot more from him if he was alive. He's the type that is usually prepared and he has a lifetime experience in a lot of adventures. If he was alive after the crash, I think we would see more clues of his attempt to self rescue. I don't see the wind blowing that wallet there, it had to of fell from the plane or someone put it there. If an animal carried it there there would be teeth marks in the wallet and I doubt the fleece would be there in one piece either. The fleece however isn't known if it is his or not but it was in the same area.

If the wallet and fleece were there, Steve was alive (assuming they identify the fleece as his) and he probably would have activated his watch with the homing frequency. At that location it probably wouldn't have been picked up anyway but there would be tracks near by one would think.

It just sounds a little fishy that's all. We will probably find more out in the next few weeks and it may shed some light on what happened.
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Failure is not an option!
USMC Jungle Environmental Survival Training PI 1985