Molotov cast about for other questions he might safely ask. Before he could come up with any, Stalin bent over the papers on his desk, a sure sign of dismissal. “Thank you for your time, Iosef Vissarionovich,” Molotov said as he stood to go.

Stalin grunted. His politeness was minimal, but then, so was Molotov’s with anyone but him. When Molotov closed the door behind him, he permitted himself the luxury of a small sigh. He’d survived another audience.

For getting his consignment of uranium or whatever it was safely from Boston to Denver, Leslie Groves had been promoted to brigadier general. He hadn’t yet bothered replacing his eagles with stars; he had more important things to worry about. His pay was accumulating at the new rate, not that that meant much, what with prices going straight through the roof.

At the moment what galled him worse than inflation was the lack of gratitude he was getting from the Metallurgical Laboratory scientists. Enrico Fermi looked at him with sorrowful Mediterranean eyes and said, “Valuable as this sample may be, it does not constitute a critical mass.”

“I’m sorry, that’s not a term I know,” Groves said. He knew nuclear energy could be released, but nobody had done much publishing on matters nuclear since Hahn and Strassmann split the uranium atom, and, to complicate things further, the Met Lab crew had developed a jargon all their own.

“It means you have not brought us enough with which to make a bomb,” Leo Szilard said bluntly. He and the other physicists round the table glared at Groves as if he were deliberately holding back another fifty kilos of priceless metal.

Since he wasn’t, he glared, too. “My escort and I risked our lives across a couple of thousand miles to get that package to you,” he growled. “If you’re telling me we wasted our time, smiling when you say it isn’t going to help.” Even relatively lean as the journey had left him, he was the biggest man at the conference table, and used to using his physical presence to get what he wanted.

“No, no, this is not what we mean,” Fermi said quickly. “You could not have known exactly what you had, and we could not, either, until you delivered it.”

“We did not even know that you had it until you delivered it,” Szilard said. “Security-pah!” He muttered something under his breath in what might have been Magyar. Whatever it was, it sounded pungent. Groves had seen his dossier. His politics had some radical leanings, but he was too brilliant for that to count against him.

Fermi added, “The material you brought will be invaluable in research, and in combining with what we eventually produce ourselves. But by itself, it is not sufficient.”

“All right, you’ll have to do here what you were going to do at Chicago,” Groves said. “How’s that coming?” He turned to the one man from the Met Lab crew he’d met before. “Dr. Larssen, what is the status of getting the project up and running again here in Denver?”

“We were building the graphite pile under Stagg Field at the University of Chicago,” Jens Larssen answered. “Now we’re reassembling it under the football stadium here. The work goes-well enough.” He shrugged.

Groves gave Larssen a searching’ once-over. He didn’t seem to have the driving energy he’d shown in White Sulphur Springs, West Virginia, the summer before. Then, he’d passionately urged the federal government-in-hiding to do all it could to hold Chicago against the Lizards. But the Met Lab had had to move even though Chicago was held, and now-well, it just didn’t seem as if Larssen gave a damn. That kind of attitude wouldn’t do, not when the work at hand was so urgent.

The meeting with the physicists went on for another half hour, over lesser but still vital issues like keeping electricity coming into Denver and into the University of Denver in particular so the men could do their jobs. People in the United States had taken electricity for granted until the Lizards came. Now, over too much of the country, it was a vanished luxury. But if it vanished in Denver, the Met Lab would have to find somewhere else to go, and Groves didn’t think the country-or the world-could afford the delay.

Unlike nuclear physics, electricity was something with which, by God, he was intimately familiar. “We’ll keep it going for you,” he promised, and hoped he could make good on the vow. If the Lizards got the idea humans were experimenting with nuclear energy here, they’d have something to say about the matter. Keeping them from finding out, then, was going to be a sizable part of keeping the lights on.

When the meeting broke up, Groves fell into step with Larssen and ignored the physicist’s efforts to break away. “We need to talk, Dr. Larssen,” he said.

“No we don’t, Colonel-sorry, General-Groves,” Larssen said, loading the title with all the scorn he could. “The Army’s already done enough to screw up my life, thanks very much. I don’t need any more help from you.” He turned his back and started to stamp off.

Groves shot out a big, meaty hand and caught him by the arm. From the way Larssen whirled around, Groves thought he was going to swing on him. Decking a physicist wasn’t part of his own job description, but if that was what it took, that was what he’d do.

Maybe Larssen saw that in his eyes, for he didn’t throw the punch. Groves said, “Look, your life is your business. But when it makes you have trouble with your job, well, your particular job is too important to let that happen. So what’s eating you, and how come you think it’s the, Army’s fault?”

“You want to know? you’really want to know?” Larssen didn’t wait for an answer from Groves, but plowed ahead: “Well, why the hell shouldn’t I tell you? Somebody else will if I don’t. After I saw you last year, I managed to get all the way to western Indiana on my own. That’s when I ran into General Patton, who wouldn’t let me send my wife a message so she’d know I was alive and okay.”

“Security-” Groves began.

“Yeah, security. So I couldn’t get her a message then, and by the time I got to Chicago, it was too late-the Met Lab team had already taken off. And I couldn’t get a message to Barbara after that-security again. So she figured I was dead. What was she supposed to think?”

“Oh,” Groves said. “I’m sorry. That must have been a shock when she came into Denver. But I’ll bet you had quite a reunion.”

“It was great,” Larssen said, his voice deadly cold. “She thought I was dead, so she fell for this corporal who rides herd on Lizard POWs. She married him up in Wyoming. I was already in Denver, but Colonel Hexham, God bless him, still wouldn’t let me write. Security one more time. Now she’s gonna have the guy’s baby. So as far as I’m concerned, General Groves; sir, the U.S. Army can go fuck itself. And if you don’t like it, throw me in the brig.”

Groves opened his mouth, closed it again. He’d been through Chugwater just after that wedding in Wyoming. He’d known something was eating Larssen, but not what. No wonder the poor bastard was in a blue funk. Mahatma Gandhi wouldn’t have stayed cool, calm, and collected with this landing on him.

“Maybe she’ll come back to you,” he said at last. It sounded lame, even in his own ears.

Larssen laughed scornfully. “Doesn’t look that way. She’s still going to bed with Sam stinking Yeager, that’s for sure. Women!” He clapped a hand to his forehead. “You can’t live without ’em and they won’t live with you.”

Groves hadn’t seen his own wife in months, either, or sent her a note or anything else. He didn’t worry about her running around, though; he just worried about her being all right. Maybe that just meant he was older and more settled than Larssen and his wife. Maybe it meant his marriage was in better shape. Or maybe (unsettling thought) it meant he didn’t know what to worry about.

He fell back on his own training: “Dr. Larssen, you cannot let it get you down to the point where it affects your work. You cannot. More than just you and your wife depends on what you do here, more even than your country. I am not exaggerating when I say the fate of humanity rests on your shoulders.”