would be like. ne thing happened during the third year of Etl's existence. And his presence on Earth was responsible. Enough serious interest in space travel was built up to overcome the human inertia that had counteracted the long-standing knowledge that such things were possible. A hydrogen-fusion reaction motor was built into a rocket, which was then hurled to the moon. Miller went along, ostensibly to help establish the first Army experimental station there, but mostly to acquire the practical experience for a far longer leap. In a way, I wished I could have gone, too; but, after all, the shadows in Etl's background were far more intriguing than the dead and airless craters and plains of the lunar surface. Before Miller and the other moon-voyagers even returned, Detroit was busy forging, casting and machining the parts for a better, larger and much longer-range rocket, to be assembled in White Sands, New Mexico. When Miller got back, he was too eager and busy to say much about the moon. For the next two and a half years, he was mostly out in White Sands. But during the first of our now infrequent meetings, he said to Craig and Klein and me: "When I go out to Mars, I'd like to keep my old bunch as crew. I need men I'm used to working with, those who understand the problems we're up against. I have a plan that makes sense. The trouble is, to join this expedition, a man has to be part damn-fool." Klein chuckled. "I'll sell you some of mine." I just nodded my way in. I'd never thought of backing out. Craig grabbed Miller's hand and shook it. Miller gave Etl a chance to say no. "You can stay on Earth if you want to, Etl." But the creature said: "I have lived all my life with the idea of going, Miller. Thank you." iller briefed us about his plan. Then he, Klein, Craig and I all took a lot of psych tests—trick questioning and so forth to reveal defects of conviction and control. But we were all pretty well indoctrinated and steady. Etl had taken so many tests already that, if there were any flaws still hidden in him, they would probably never be found. Mars and Earth were approaching closer to each other again in their orbital