Cattle rancher Clyde Chess never learned who -- or what -- killed his heifer 11 years ago, removing its lips, tongue, ears, heart and reproductive organs with laserlike precision. But he has a theory. "I suspect, and I know it sounds farfetched, it was government testing," he said. "They're the only ones that have that kind of technology." This is eastern El Paso County, where stories of mysterious black aircraft, unexplained lights in the sky and bizarre cattle experimentation aren't considered too farfetched. Many remember a string of cattle mutilations in the 1970s. It's been a long time since Colorado...