The aliens wooed Earth with gifts, love, patience and peace. Who could resist them? After all, no one shoots Santa Claus! he rifle lay comfortably in his hands, a gleaming precision instrument that exuded a faint odor of gun oil and powder solvent. It was a perfect specimen of the gunsmith's art, a semi-automatic rifle with a telescopic sight—a precisely engineered tool that could hurl death with pinpoint accuracy for better than half a mile. Daniel Matson eyed the weapon with bleak gray eyes, t