“We have almost enough plutonium for the second weapon now,” Fermi said. “Once we use it in the bomb, though, we will for a time be low. But production is steady, even improving. With what we have now, with the third atomic pile coming into full production, from now on we will be manufacturing several bombs a year.”
“That’s what I want to hear,” Groves said. The production numbers had told him the same thing, but hearing it from the man in charge of the piles was better than inferring it from figures.
“The next question is, now that we have these bombs, how do we place them where we want to use them?” Szilard said. He waved a stubby hand toward the Fat Lady. “This one would have to go on a diet before it could fit in an airplane, and the Lizards would shoot down any airplane before it got where it was going, anyhow.”
Both those points were true. The Fat Lady weighed nearly ten tons, which was more than any bomber could carry. And anything bigger than a Piper Cub drew the Lizards’ immediate and hostile attention. Groves didn’t know how to make a nuclear weapon small enough to fit into a Piper Cub, but he did know that, no matter what theLuftwaffe thought, you didn’t have to deliver a bomb by air.
“I promise you, Dr. Szilard: we will manage when the time comes,” he said, and let it go at that. He didn’t want everybody to hear what the delivery plans were. Security wasn’t as tight as it had been with the Japs and Nazis to worry about; he had trouble imagining anybody vile enough to want to betray American atomic secrets to the Lizards. But he was just an engineer, and knew his imagination had limits. What was unthinkable for him might not be for someone else.
“How do we even get the thing out of the reprocessing plant?” a technician asked. He worked at one of the piles, not here where the plutonium was extracted and the bomb made. Groves just pointed to the wooden cart on which the Fat Lady sat. It had wheels. The technician looked foolish.
He needn’t have. Moving ten tons was no laughing matter, especially when those ten tons included complicated gadgetry and had to be moved in utmost secrecy. Groves had most of the answers now. Inside a week, he needed all of them. He was confident he’d get them. Moving heavy things from one place to another was a technology mankind had had under control since the days of the Pharaohs.
Somebody said, “We got our bombs now. How soon will the Germans have theirs? When will the Russians set off another one? What about the Japs?”
“If there are no other questions, class is dismissed,” Groves said solemnly. That got the laugh he’d hoped for. When it was over, he went on, “The Germans aren’t very far behind us. If they hadn’t had their, ah, accident, they might be ahead of us.”
The intelligence information on which he based that wasn’t firsthand. Much of it came from things Molotov had said when he was in New York. Where Molotov had got it, Groves didn’t know. The Russians had been wrong about the Germans before, generally to their sorrow.
Groves also took special care in describing what had gone wrong with the Germans’ first effort to set up a pile that went critical. Though the Germans seemed to have been spectacularly careless about safety precautions, it wasn’t as if running a pile was an exact science. Things could go wrong here, too.
“What of the Russians?” Enrico Fermi echoed. “They were first with their bomb, but only silence from them since-a long silence now.”
“They say they’ll be ready with another bomb come spring,” Groves answered. “If I had to make a guess, I’d say you shouldn’t hold your breath waiting for them. They got a jump start with the plutonium they and the Germans stole from the Lizards. That was enough to give them the one bomb. Past that…” He shook his head. “Russia simply does not have the precision industry, technical skill, or scientific numerical strength to come even close to manufacturing their own. Not yet.”
“How long do you think they’ll need?” In almost identical words, three people asked the same question.
“Oh, I don’t know-1955, maybe,” Groves answered, deadpan. That got another laugh. He didn’t really think the Reds would take that long, but he didn’t look for a new bomb from them next Tuesday, either.
“And the Japanese?” Leo Szilard asked, as if he expected Groves to forget. “What of them?”
Groves spread his hands. “Dr. Szilard, there I just don’t know what to tell you. They were on the track of something, or the Lizards wouldn’t have blown Tokyo off the map. How much they knew, how many of their top people got killed when the bomb hit, how far they’ve come toward rebuilding their program-I don’t know, and I’d be lying if I said I did.”
Szilard nodded. “That is fair, General. So often, people are in the habit of saying they know more than they do. Seeing a case where this is not so makes a pleasant change.”
That was the first compliment Groves had got from Szilard in as long as he could remember. He cherished it for that very reason. For the sake of his own peace of mind, though, he wished he could give the Hungarian physicist a more authoritative answer. The Japanese worried him. Before Pearl Harbor, the United States hadn’t taken Japan seriously: not a white man over there, for one thing, he thought. But whether the Japs were white, yellow, or bright blue, their warships had proved as good as those Americans made, and their airplanes probably better. Buck-toothed, slant-eyed little bastards they might be, but if you thought they couldn’t fight-if you thought they couldn’t engineer-you had another think coming.
“Anything else?” he asked.
“Yeah,” said the technician who’d asked him about getting the bomb out of the reprocessing plant “How come that arrow that says ‘this end up’ is pointing down at the floor?”
“What arrow?” Groves blurted, a split second before he realized the technician was pulling his leg. “Wise guy,” he said, through the laughter sent at him. He didn’t mind it. He knew hostility aimed at him was sometimes what kept the crew working together and working hard. That was fine. As long as theywere working together and working hard, he couldn’t kick.
He walked out of the reprocessing plant to let the gang cuss at him when he wasn’t there to hear it. His breath smoked. To the west, the Rockies were white. It had snowed in Denver more than once, but not for the past week. He hoped it would hold off a bit longer. Moving the Fat Lady with ice on the ground wasn’t something he wanted to think about, though he would if he had to. Actually, getting the bomb moving wouldn’t be such a problem. Stopping it, though…
Ice wasn’t something Pharaoh’s engineers had had to worry about.Lucky dogs, he thought.
His office back in the Science Building wasn’t what you’d call warm, either. He refused to let it get him down. Like a bear before hibernation, he had enough adipose tissue to shield him from the chill. So he told himself, at any rate.
He pulled an atlas off the shelf and opened it to a map of the United States. The one thing you couldn’t do without aircraft, at least not easily, was deliver a bomb to the heart of enemy’s territory. You had to place the weapon somewhere along the frontier between what you held and what he did. Given the state of the war between humanity and the Lizards, that didn’t strike Groves as an insurmountable obstacle to using it effectively.
Once the Fat Lady got aboard a freight car and headed out of Denver, where would they use it? That wasn’t his responsibility, which would end when the bomb went onto the train. Even so, he couldn’t help thinking about it.
His eyes kept coming back to one place. Nowhere else in the whole country had a rail network that even approached the one going into and out of Chicago. The Lizards had cut a lot of those routes, of course, but you could still reach the outskirts of town from the north or from the east. And with all the fighting going on there, you couldn’t help but knock out a lot of Lizards if the bomb went off there.