I wonder if LE was looking for something specific (besides a body) based on intelligence gained through investigation, or if they were just searching in hopes of finding anything that may have been missed during the earlier stages? IMO the search yielded 'results' fairly quickly, which leads me to assume they knew 'what' to look for and 'where'. Of course if no remains were found, then the mystery of what happened to Deorr, and where he is, is still unresolved. Hopefully the new evidence being tested is a step in the right direction towards finding Deorr. I imagine it will be at least 6 weeks before any lab results are released. Maybe they won't even be released to the public.
I'd love to hear people's ideas of what the evidence might be to add to my thoughts. Could be something belonging to Deorr, such as clothing, a diaper, or his boots? Maybe some camping equipment (cooking items; tools; rope; tarps; flashlight) that was buried or hidden?