"Yes. It's been a sort of specialty of mine, in fact. I wrote my thesis on the theory of dielectric polarization and since then—no, that's classified."

"M-hm." Berg took another sip of his drink. "And right now you're just a cog in a computer-development Project. You see, I do know a few things about you. However, we've decided—higher up, you know, in fact on the very top level—to take you off it for the time being and put you on this other job, one concerning your specialty. Furthermore, you won't be part of a great organizational machine, but very much on your own. The fewer who know of this, the better."

Lancaster wasn't sure he liked that. Once the job was done—if he were possessed of all information on it—he might be incarcerated or even shot as a Security risk. Things like that had happened. But there wasn't much he could do about it.

"Have no fears." Berg seemed to read his thoughts. "Your reward may be a little delayed for Security reasons, but it will come in due time." He leaned forward, earnestly. "I repeat, this project is top secret. It's a vital link in something much bigger than you can imagine, and few men below the President even know of it. Therefore, the very fact that you've worked on it—that you've done any outside work at all—must remain unknown, even to the chiefs of your Project."

"Good stunt if you can do it," shrugged Lancaster. "But I'm hot. Security keeps tabs on everything I do."

"This is how we'll work it. You have a furlough coming up in two weeks, don't you—a three months' furlough? Where were you going?"

"I thought I'd visit the Southwest. Get in some mountain climbing, see the canyons and Indian ruins and—"

"Yes, yes. Very well. You'll get your ticket as usual and a reservation at the Tycho Hotel in Phoenix. You'll go there and, on your first evening, retire early. Alone, I need hardly add. We'll be waiting for you in your room. There'll be a very carefully prepared duplicate—surgical disguise, plastic fingerprinting tips, fully educated in your habits, tastes, and mannerisms. He'll stay behind and carry out your vacation while we smuggle you away. A similar exchange will be affected when you return, you'll be told exactly how your double spent the summer, and you'll resume your ordinary life."

"Ummm—well—" It was too sudden. Lancaster had to hedge. "But look—I'll be supposedly coming back from an outdoor vacation, with a suntan and well rested. Somebody's going to get suspicious."

"There'll be sun lamps where you're going, my friend. And I think the chance to work independently on something that really interests you will prove every bit as restful to your nerves as a summer's travel. I know the scientific mentality." Berg chuckled. "Yes, indeed."