Chris looked ardently at the old man.

A moment later, the scientist's eyes shut. An expression of immense concentration came upon his features. Perspiration welled and trickled on his countenance—as on the colonel's. Suddenly his eyes opened again. He grabbed the colonel's arm. "Great God, man! I've cracked the toughest problem in physics! The thing just came to me this moment! Why! With this equation—we'll be able to make bombs that will assure American domination for a century! I'll win my second Nobel Prize! Every nuclear physicist's head will swim with envy! The financial possibilities—billions!—trillions! I'll just get it on paper—!" He broke off. "Wasn't there—somebody else—standing here?" he said perplexedly. "Never mind! Lend me a pencil, Learned!"

"Somebody else?" The colonel shook his head. "Nobody but the three of us. And the gunners. Jesus, I wish this mission was ended! I've been having a terrible struggle in my conscience about it!"

Learned said, "Have you? Me—too. I kind of hate humanity today. I kept wishing—something would break down, and stop the whole thing. I get a choked-up feeling when I think of those people."

The scientist was crouching, now—gazing at the streaming gray desolation beyond the windows. "Funny," he said to the gunner at his side. "A minute ago—I was sure I'd got a new insight into a very complex problem. Now—I can't even remember my approach."

The gunner, who held palaver of the brass and all VIPs to be but one more nuisance of war, said, "Yeah?"

The B-29 flew on toward its as yet unspecified destination.

The City of Horror and Shame.

Back at the base, the brass was laying plans for a second run—to the City of Naked Sorrow.