The best part about Omar was that he wasn't simply a decoy. Surrounding the robot was a grid of ultraviolet and microwave beams. When Loving or his partner, presumably from some distance, took up position and fired the typical three-burst round into Omar's head, empty and inexpensively replaceable, a computer would instantly correlate trajectory, speed and GPS coordinates and indicate on our handhelds where the shooter was, down to three feet. Would