Stepping out on the field was all it took. It was only a minor league game, the Anthrax Scare versus the Letter Bombs, in a town on the opposite end of the country from Bio Threats Citydome. It was only an exhibition, and Thal’s appearance wasn’t even publicized. His real name wasn’t even on his jersey. But the fans recognized him as soon as he set foot on the turf. As he jogged to the outfield, glove tucked against his chest, they leaned and squinted and pointed, and a murmur rose from the stands. As the voice on the P.A. system announced the first batter, the murmur grew to a rumble and then to a roar. Before the first pitch could be thrown, people were hurling food and shoes and batteries in Thal’s direction. Before a single player could run the base line, fans were pouring onto