Randy Johnson, a former green beret platoon leader in Vietnam, has now settled into the peaceful life of an Idaho rancher. It holds a kind of a magic, a new freedom, a relief from a cunning invisible enemy left behind in the dangerous jungles of Vietnam. Hes good with a gun, fast on a horse and as tough and smart as the next man, but hes about to meet a new enemy more cunning and illusive than the one he left in Vietnam. Idahos television stations issue "Breaking News" alerts almost hourly providing the latest gruesome statistical details of newly discovered mutilated cattle-many found on...