He isn't a Navy Seal, Special Forces, or a Ninja. Just a blind kid who got lucky. Grandma had their packs all ready, an old hippy, the elderly woman knew a bit about woods lore. He'd camped with her, fished, that sort of thing. Limited by his intolerance to the sun, Tryg was born an albino. His vision very limited, but his other senses compensated. After the Biters came in on them, Grandma had sacrificed herself to that her young grandson could escape, and he'd made it on his own up til now, although his food sources had dwindled til all he had was worms and a bag of cough drops. He arrives cough free, and hungry, and is taken in by a couple other young survivors.