“GOOD EVENING, DR. LANCASTER,” he said. “Please sit down. What’ll you have?” “Thanks, I’ll have Scotch and soda.” Might as well make this expensive, if the government was footing the bill. And if this—Berg—thought him un-American for drinking an imported beverage, what of it? The scientist lowered himself into the seat opposite his host. “I’m having the same, as a matter of fact,” said Berg mildly. He twirled the dial and slipped a couple of five-dollar coins into the dispenser slot. When the tray was ejected, he sipped his drink appreciatively and looked across the rim of the glass at the other man. “You’re a high-ranking physicist on the Arizona Project, aren’t you, Dr. Lancaster?” he asked. That much was safe to admit. Lancaster nodded. “What is your work, precisely?” “You know I

