It was a wonderful bodyguard: no bark, no bite, no sting ... just conversion of the enemy! At three-fifteen, a young man walked into the circular brick building and took a flattened package of cigarettes from his shirt pocket. "Mr. Stern?" he asked, throwing away the empty package. Stern looked with hard eyes at the youthful reporter. He recognized the type. "So they're sending around cubs now," he said. "I'm no cub—I've been on the paper a whole year," the reporter protested, and then stopped,