i tucked my chin down into my scarf and hurried over to the library . he relaxed slightly but would n't let her hands go . the next site they investigated turned out to be a crater with some metal pieces lying around . while it had bothered him that mary jo did n't live close to her family , he 'd felt better knowing mack was nearby . some of the crew were holding their ears . he wanted a third , but no more . `` i want you to keep the rear here and prevent them from turning around . 