Night was falling along with a heavy early December snow in the Porcupine Mountains of Michigan's Upper Peninsula. The mountains stood tall and silent, cloaked in a thick white blanket, as a small road wound through the valley like a snake. On this road, almost insignificant against the mammoth landscape, were the headlights of a car. "This is Ranger Fred Montgomery," said the amiable voice on the other end of the line. "How can I help you?" "Where are you?" Montgomery asked casually. "I'll leave my blinker on," Dr. Harper told him. "Thank you for all your help, Mr. Montgomery."