"In a while," said Feinberg.

"Where's it going to hit? Will we be able to see it?"

"It'll impact on the back side."

"That's a pity."

"Maybe not." Feinberg let his concern show. "Giant comet coming hard." He made a noise deep in his throat, and tapped a key. A single set of numbers appeared on the screen:

7x1029

Hoxon made a face. "Energy release?"

"Approximately."

"Wes, that can't be right."

Feinberg ignored the familiarity. "I'd like to think not," he said. "It's enough to take the top off the Moon." He stared out at the cool green lawn, still damp in the morning light. "There might be a downside to all this." White House Dining Room. 8:04 A.M.

"Sorry to disturb you, Mr. President." Al Kerr, Henry Kolladner's chief of staff, loomed in the doorway. He looked unhappy.

The president was seated at his breakfast table with the first lady. Emily Kolladner frowned. She had fought a losing battle for two years to guard the family's privacy, before finally acceding to the reality that a president has no personal life. Henry had tried to find time for her; he usually rose early, worked two hours or so, and then joined her for a casual breakfast. It was supposed to be understood that the meal not be interrupted for any calamity short of nuclear war. Of course, that understanding had been violated almost daily. The first chief of staff, Kerr's predecessor, had lost his job over the issue. Henry smiled at Emily, shrugged, and finished chewing a piece of bacon. "What is it, Al?" he asked.

Kerr stepped into the room and only then did Henry realize he wasn't alone. A middle-aged, officious-looking woman entered behind him. He'd seen her before.

"Mr. President," said Kerr, "you know Dr. Juarez."

Yes. His science advisor. "Of course. Mercedes, how are you?"

Mercedes Juarez wore black slacks and a black jacket with a gold scarf over it. Her hair looked somewhat windblown and her eyes were dark pinpoints. "Quite well, thank you, Mr. President." She opened a leather briefcase. "Sir, we have an emergency." The observation didn't faze Kolladner, who saw two to three dozen emergencies daily. She extracted a picture and held it up for him. It showed a field of stars. One was especially bright. "This is Tomiko," she said.

"Who?"

"The comet, sir."

"Oh. Of course."

"It's very big. It's traveling very fast. And it's coming this way."

Kolladner put his fork down. The room seemed to have gotten cold. "And-?"

"It's going to hit the Moon Saturday night."

"Okay…" He paused for a moment, trying to recover his equilibrium. He'd thought, from her tone, the news was going to be a lot worse. "You're telling me Moonbase is in danger?"

She took a deep breath. "That, too."

He glanced up at Kerr, not understanding where this was going. "Too?" he asked.

Dr. Juarez's eyebrows drew together. "Mr. President." She made a strange face, like a child being forced to eat asparagus. "It's big. We've never seen anything this big before. It's possible it might demolish the Moon altogether."

Kolladner looked at his wife, and at Kerr. Emily's hand touched his wrist. The United States had a multi-trillion-dollar investment in the Moon. He found it hard to consider the ramifications, the idea was so off-the-wall. "There's no mistake?"

"No, sir. There's a fudge factor, but it's not worth discussing."

"How much of a fudge factor?"

"Very little, as far as the actual strike is concerned. Considerably more with regard to energy release."

Henry pushed back from the table. "Okay. I assume they're evacuating Moonbase?"

"We haven't heard anything formally yet, Mr. President," said Kerr. "We've passed them the word, but I don't think they've had time to digest it. But yes, they'll have to move everyone out."

"Yes. I'd think so." He studied the science advisor. "What do you need from me?"

"Mr. President," she said, "it's possible-likely-that fragments will be blown off the Moon. If that happens, we could catch some of the fallout."

"We? The United States?"

"The world."

"Pardon me," said Emily, "but why don't you just tell us what you know?" Emily rarely intervened directly. But she looked exasperated. "Are we really worried about falling moonrock?"

"Yes, Mrs. Kolladner. Maybe a lot of it."

"How much?" asked Henry. "How likely?"

"I don't know. I'm not sure anybody does. We've scheduled a meeting so you can talk to the experts firsthand."

Henry glanced at Kerr. Kerr nodded. He looked worried.

The president pushed his plate away. Falling sky was hard to take seriously. But if Juarez had managed to scare Kerr… hell, she'd scared Henry.

Henry Kolladner was nearing the end of a long and distinguished career. He'd made sacrifices for his country. His lungs had been damaged thirty-three years ago by Iraqi chemical agents, and as a young congressman, he'd walked into a militia hostage situation, been shot twice, but brought the captives out. He'd also taken Culpepper's dream of returning to the Moon and carried it to fulfillment, and he'd bitten the bullet and restructured Social Security and Medicare programs to compensate for the fact that people now lived longer, and the nation could no longer afford a retirement age of eighty. (He'd read only yesterday that the average person who made it to fifty could now expect to become a centenarian. My God, how were they going to handle that! He wondered whether they shouldn't bring back tobacco.) He'd presided over a robust economy that had come very close to providing enough jobs for a workforce that was growing at a frightening pace.

He was constitutionally eligible to run again. And he was popular enough to win easily. But he'd contracted a rare form of lymphatic cancer, and the doctors weren't even sure he'd live out his present term. So he'd announced his intention to step aside. It was a pity; there was still a great deal to do. Whoever succeeded him would have to face some tough decisions. He'd been well on the way to establishing a reputation that would have placed him among the outstanding presidents. Now everything would depend on whether his successor finished what Henry had begun. Consequently, while maintaining formal neutrality among the candidates, he was hoping that anyone other than Charlie got the nomination. He liked Charlie, but the man lacked the political savvy and will to get things done.

Henry was the country's second African-American president. (Culpepper had been the first.) He'd been grateful to be second. Everyone had stood around waiting for Culpepper to make a mistake, to get something wrong, to lean too far left or right. The old son of a bitch had walked a tightrope for eight tough years. But he'd pulled it off.

Now it looked as if a major problem had fallen out of the sky. He doubted they really need worry about Moon fragments raining down on the world, but the American investment on Luna was something else. The major world powers were all shareholders in Moonbase International, and the loss of the facility was going to constitute a debacle of major proportions. The glitter would go off his name, and he'd be forever associated with it, as Lyndon Johnson was with Vietnam, and Herbert Hoover with the Depression.

"Is there any chance of a mistake?" he asked hopefully.

"They're still checking the numbers, Mr. President. But I don't think so."

He glared at her. "Wonderful. We spend a couple of trillion dollars to get Moonbase open for, what, a week? And then close it down again."

Juarez said nothing.

The president's mouth was dry. His first thought was that, however he proceeded, there was going to be a lot of finger-pointing. Moonbase, Director's Office. 8:27 A.M.

Evelyn Hampton was conferring with Jack Chandler, in his first official day on the job, over the remaining senior vacancies. Chandler had worked in executive capacities for years with various corporations with which Evelyn had direct or indirect connections. He'd twice come to her assistance, helping to get new operations up and running. It was his specialty and he was very good at it.