Hell (contains spoilers)
I felt so sad about that poor guy, the misery in wich he tries to survive. His horribly looking and nagging wife and mutant son (i understand why he killed them. I would have done that too)
Watch this movie if you feel low or are depressed, ill guarantee that you feel better because there it is nothing compared to the utter hell our vietnam veteran goes trough.
I enjoy watching this movie as i too suffer from post-traumatic hell :)
"Microchanges in air density, my a$$....."