"The first fallout dust settles on Sheffield. It's an hour and 25 minutes after the attack. An explosion on the ground at Crewe has sucked up this debris and made it radioactive. The wind has blown it here. This level of attack has broken most of the windows in Britain. Many roofs are open to the sky. Some of the lethal dust gets in. In these early stages, the symptoms of radiation sickness and the symptoms of panic are identical."