Workers next door at ABE Auto Service heard the shots and stopped their work Friday. "We heard ‘pop, pop, pop, pop’ — about five or six rounds," said Mark Mayer, a St. Clair Shores resident who works at the shop. His co-worker, Detroit resident Jerry Miller, instinctively threw himself on the ground when he heard the shots. "I grew up on the northwest side of town," he said. "It's a natural reaction."