"Sandusky." He said it again, eyeing the map on the wall of his office as avidly as if it were the woman he loved slipping out of a negligee. Where Confederate troops reached Lake Erie didn't matter so much. That they reached it… That they reached it mattered immensely. He'd seen as much before the fighting started. The United States were only starting to realize it now.

"Sandusky." Featherston said it one more time. Getting to Sandusky-or anywhere else along the shores of Lake Erie-didn't mean victory. He had a hell of a lot of work to do yet. But if his barrels had been stopped in front of Columbus, that would have meant defeat. He'd done what he had to do in the opening weeks of his war: he'd made victory possible, perhaps even likely.

Lulu knocked on the door. Without waiting for his reply, she stuck her head in the office and said, "Professor FitzBelmont is here to see you, Mr. President."

"Send him in," Jake said resignedly, wondering why he'd given the man an appointment in the first place. "I promised him, what-ten minutes?"

"Fifteen, Mr. President." Lulu spoke in mild reproof, as if Featherston should have remembered. And so he should have, and so he had-but he'd done his best to get out of what he'd already agreed to. Lulu was better at holding him to the straight and narrow path than Al Smith dreamt of being. She ducked out, then returned with a formal announcement: "Mr. President, here is Professor Henderson V. FitzBelmont of Washington University."

Henderson V. FitzBelmont looked like a professor. He wore rumpled tweeds and gold-framed eyeglasses. He had a long, horsey face and a shock of gray hair that resisted both oil and combing. When he said, "Very pleased to meet you, Mr. President," he didn't tack on a ringing, "Freedom!" the way anybody with an ounce of political sense would have done.

"Pleased to meet you, too." Jake stuck out his hand. FitzBelmont took it. To the President's surprise, the other man had a respectable grip. His hand didn't jellyfish under Featherston's squeeze. Obscurely pleased, Featherston waved him to the chair in front of his desk. "Why don't you take a seat? Now, then-you're a professor of physics, isn't that right?"

"Yes, sir. That is correct." FitzBelmont talked like a professor, too. His voice had the almost-damnyankee intonation so many educated men seemed proud of, and a fussy precision to go with it, too.

"Well, then…" Jake also sat, and leaned back in his chair. "Suppose you tell me what a professor of physics reckons I ought to know." He didn't quite come out and say that a professor of physics couldn't tell him anything he needed to know, but that was in his own voice and manner.

Henderson V. FitzBelmont didn't seem to notice. That didn't surprise Featherston, and did amuse him. The professor said, "I was wondering, Mr. President, if you were familiar with some of the recent work in atomic physics coming out of the German Empire."

Jake didn't laugh in his face, though for the life of him he couldn't have told why not. All he said was, "Sorry, Professor, but I can't say that I am." Or that I ever wanted to be, either. He looked at his watch. Damned if he would give this fellow a minute more than his allotted time.

"The Germans have produced some quite extraordinary energy releases through the bombardment of uranium nuclei with neutrons. Quite extraordinary," Professor FitzBelmont said.

"That's nice," Jake said blandly. "What does it mean? What does it mean to somebody who's not a professor of physics, I ought to say?"

He didn't know how he expected FitzBelmont to answer. The tweedy academic made an unimpressive fist. "It means you could take this much uranium-the right kind of uranium, I should say-and make a blast big enough to blow a city off the map."

"Wait a minute," Jake said sharply. "You could do that with one bomb?"

"One bomb," Professor FitzBelmont agreed. "If the theoretical calculations are anywhere close to accurate."

Featherston scratched his head. He'd heard things like that before. Theory promised the moon, and usually didn't even deliver moonshine. "What do you mean, the right kind of uranium? Up till now, I never heard of uranium at all, and I sure as hell never heard of two kinds of it."

"As you say, sir, there are two main kinds-isotopes, we call them," the professor answered. "One has a weight of 238. That kind is not explosive. The other isotope only weighs 235. That kind is, or seems to be. The trick is separating the uranium-235 from the uranium-238."

"All right." Featherston nodded. "I'm with you so far-I think. The 235 is the good stuff, and the 238 isn't. How much 235 is there? Is it a fifty-fifty split? One part in three? One part in four? What?"

Henderson V. FitzBelmont coughed. "In fact, Mr. President, it's about one part in a hundred and forty."

"Oh." Now Jake frowned. "That doesn't sound so real good. How do you go about separating it out, then?"

The professor also frowned, unhappily. "There is, as yet, no proven method. We cannot do it chemically; we know that. Chemically, the two isotopes are identical, as any isotopes are. We need to find some physical way to capitalize on their difference in weight. A centrifuge might do part of the job. Gaseous diffusion might, too, if we can find the right kind of gas. The only candidate that seems to be available at present is uranium hexafluoride. It is, ah, difficult to work with."

"How do you mean?" Featherston inquired.

"It is highly corrosive and highly toxic."

"Oh," Jake said again. "So you'd need to do a lot of experimenting before you even have a prayer of making this work?" Professor FitzBelmont nodded. Jake went on, "How much would it cost? How much manpower would it take? There's a war on, in case you hadn't noticed."

"I had, Mr. President. I had indeed," FitzBelmont said. "I confess, it would not be cheap. It would not be easy. It would not be quick. It would require a very considerable industrial effort. I do not minimize the difficulties. They are formidable. But if they can be overcome, you have a weapon that will win the war."

Jake Featherston had heard that song before. Crackpot inventors sang it every day. Professor FitzBelmont didn't seem like the worst kind of crackpot, the kind with an obviously unworkable scheme for which he wanted millions of dollars-all of them in his own personal bank account. That kind of crackpot always said things would be easy as pie. Sometimes he knew he was lying, sometimes he didn't.

Because FitzBelmont seemed basically honest, Jake let him down as easy as he could. "If you'd come to me with this here idea six years ago, Professor, I might have been able to do something for you."

"Six years ago, sir, no one in the world had the slightest idea this was possible," FitzBelmont said. "Word of the essential experiment was published in a German journal about eighteen months ago."

"Fine. Have it your way. But you don't see the point," Featherston said. "The point is, right now we are in the middle of a war. We're stretched thin. We're stretched thin as can be, matter of fact. I can't take away God knows how much manpower and God knows how much money and throw all that down a rathole that won't pay off for years and may not pay off at all. You see what I'm saying?"

Professor FitzBelmont nodded stiffly. "Yes, sir, I do understand that. But I remain convinced the benefits of success would outweigh all these costs."

Of course you do. You wouldn't be here bending my ear if you didn't, Jake thought. But that doesn't mean you're right. He stayed polite. One of the drawbacks of being President, he'd discovered, was that you couldn't always call a damn fool a damn fool to his face. Sometimes, no matter how big a damn fool he was, you knew you might need him again one of these days.

After he'd shown Professor FitzBelmont the door, Jake let out a sigh. For a moment, the man had had him going. If you could take out a whole city with just one bomb, that would really be something. It sure would-if you could. But odds were you couldn't, and never would be able to. Odds were the professor wanted the Confederate government to pay for a research project he couldn't afford any other way. Odds were nothing but a few papers with FitzBelmont's name on them would ever come out of the research project. Since becoming President, Jake had become wise in the ways of professors. He'd had to.