Kevin Katke was quite a man. He had no military training, no political background and no espionage experience. Nonetheless, his hatred of communists and can-do attitude made him the pre-eminent idiot savant of private American intelligence throughout the Reagan administration. It was a peripatetic career that culminated with him spearheading a bungled plot to oust a leftist regime in Grenada while holding down a full-time job at Macy’s.