By NICK PERRY and SAM McNEIL, Associated Press NERRIGUNDAH, Australia (AP) — Ash Graham's dog, Kozi, wakes him at 8 a.m., eager for his morning walk. Then Graham realizes he was dreaming, and gets up from the one-man tent he's been sleeping in each night since a wildfire swept through his village on New Year's Eve. Graham, a volunteer firefighter, resumes his weary search for Kozi: hiking south down