IR scopes and cameras should be a must on those types of helicopters. And I'm guessing its been getting colder up there than down here so he has to be making a fire or something to put off heat at night...so finding him at night with IR should be pretty reasonable. Are they letting people walk their properties? With all due respect to those looking for him, if they need some help I still talk to some of my fellow Marines. We can pack up and head up there, lol.