Springfield,
Thanks for your post. I was not trying to discredit those folks (professionals) who were out looking - only the possibilities of searchers NOT knowing where - or - what, a treasure hunter, in particular, may choose to do. (different from the everyday "hiker"), that a prospector or treasure hunter might be able to figure out, especially if they were well acquainted with the area in particular.
Gosh, we have been out in that area and seen joggers - not even a day pack - no water - 4 miles back in. We actually had a lady jogger ask us why in heavens name would we carry water - duh! I asked her why she didn't pack ANY water - which, of course, the answer was - she wasn't planning on being there for very long.
It is upsetting to me, probably because I do know that area, really well, and I know there are places there that someone could "hole up" for days, I know the side trails that are very hard to see but a treasure hunter might take a day trip to, I know where there is water that's not on a map - stuff like that.
I do know that night-tracking is very efficient - never did it looking for a person, but sure have had the "opportunity" to track at night after an archery deer hunt gone long. (we never leave hit game in the field), and the blood trail was gone, but we knew he was hit and wouldn't be surviving the run.
Since you have experience - I wonder about the cell phone deal (before they found it). Once, when we were traveling, there was an accident on the highway. (not us). The elderly gentleman could not get out of the car - he was pinned by his airbag and seatbelt. I opened my cell to call
911, and found out that I had no battery life left, and no bars. (great, eh?) Someone had told me that emergency services could be reached even without an account, so I gave it a shot, and dialed 911. Somehow, the police answered. I told them I wasn't even sure what mileage marker we were at, and the police officer asked me if they could "track" my signal - I said ok, and within a short time, he told me exactly where we were, and they dispatched an ambulance, police cars and a tow truck. I am assuming the GPS (inside the cell phone) gave them the info. I know we couldn't use it, but the police certainly did.
Is that a normal operational procedure? The second question would be thermal imaging. (these are things that weren't available back just a few years ago - at least, not as normal equipment that would be available to a smaller city or state.)
B