out of the car in a huge padded vault she was given a container of liquid and told to drink it quickly. Somebody whispered that it was to make them immune to what would otherwise be unbearable pain. A speaker amplified a voice from the surface. "Girls above the hundred and fiftieth level should lie down or sit down," the voice said. "At lower levels it is safe to stand or walk about as you choose. Those on the upper levels will please get into their shock suits. And please be calm. We'll keep you informed of events as long as possible. "The Supreme Council has authorized me to say this: that the strike is going to be unimaginably heavy, but never has Earth been better prepared to withstand one. Each of you has given of your labors to make this preparation. You are each one a part of our combined effort at this crucial moment. Take heart. Remain calm." Broken sobs came from behind her. Sue turned and saw that they were coming from a girl who couldn't possibly be more than fifteen and didn't belong on this level. An older girl led her away. Sue thought of Darth Brady, but his image wouldn't stay in her mind. The blue eyes and blond hair of Alfred Wilson were there before her. She imagined him manning a ray-weapon in a ship above Earth's atmosphere. And then memory of the returned men of Ida Bella, Nucleus, Trilogy and Firelance sent a tremoring wave of nausea through her. The speaker blared, "You have a few minutes. Choose your places and lie down or sit down. Remain calm." A girl nearby muttered. "How do they know for certain? They figured early today exactly when the strike would come. And yet our ships were out there to stop it. How did they know our ships wouldn't stop it?" A calmer voice said, "Maybe our ships purposely let them through. It may be part of one vast operation. I've heard older people say that something like it happened years ago. They let a whole fleet through and then trapped it between Sectors Three and Two. It was Earth's first big victory." "But this time they've broken through Sector Four. They can't reach Earth until they're past Sector Four." "It may be part of an even bigger operation." "But why let them strike Earth? Don't they care about us?" "Oh, hush! I have two brothers out there. I'd hate for them to