From what I read, the sighting at the post office was 3 days after the auto was stolen, he can't be in 2 places at the same time. IIRC, the LE are giving greater weight to the PA sighting.
The guys I know that could hide like that have special military training from their years of service, one is simply a woodsman. Just to clarify that I do not hang with dangerous people.
My fiancee is one of these highly trained people and very intelligent. I consult with him a lot about this case.
In that terrain, I would bet there are springs where water is naturally rock filtered or he may have tablets to use to make water potable.
If he can hunt and fish and knows the vegetation of the area, he can eat.
Rudolph hid for 5 years in the mountains.
The difference is that EF is educated as a military tactician.
But he is one man. LE has many educated analysts and immense resources.
I hope he is taken into custody alive to face the due diligence of our justice system.