The location which Rambo considers his home / natural habitat.
It hence constitutes the place Rambo would volountarily betake himself to, if it was a premise to winning a war.
Trautman: "Pressure? Let me just say that Rambo is the best combat vet I've ever seen. A pure fighting machine with only a desire - to win a war that someone else lost. And if winning means he has to die - he'll die (death implying the relocation to hell). No fear, no regrets. And one more thing, what you choose to call heII, he calls home."