John was still watching the T.V. when he heard Irene question about their ability to leave Chester's Mill. "That's right. There's an invisible wall keeping us here. We were right by the edge of town when it happened. At the gas station. We felt this shake but you can't see anything. It looks like you could just keep walking on," he said. He wasn't sure what was going on. Maybe this dome or wall or whatever it was, was real. He hadn't touched it but he had felt the shake. On the other hand, how could it be? Giant fishbowls don't just fall out of the sky and encase a small town.