"I knew him," Wales had said. "I went to school with both Lee and Martha Kendrick--his sister." "Where is he?" Wales had stared. "Back on Earth, at Westpenn Observatory. He said he'd be along soon." The Secretary said, "He's not at the Observatory. He hasn't come to Mars yet, either. He's disappeared." "But, why--" "I don't care _why_, Wales. I want to know _where_. Kendrick's got to be found. His disappearance is affecting the Evacuation. That's the report I get from a dozen different men back on Earth. I message them, 'Why are the rocket-schedules falling behind?' I tell them, 'It's Doomsday Minus 122, and Evacuation must go faster.' I get the answer back, 'Kendrick's disappearance responsible--are making every effort to find him'." After a silence the Secretary had added, "You go back to Earth, Wales. You find Kendrick. You find out what's slowing down Evacuation. We've _got_ to speed up, man! There's over twelve million people still left on Earth." And here he was, Wales thought, in a rocket-ship speeding back to Earth on one of the endless runs of the Marslift, and he still didn't know why Evacuation had slowed, or what Lee Kendrick's disappearance had to do with it, and he'd have precious little time to find out. * * * * * They were sweeping in in a landing-pattern now, and the turquoise had become a big blue balloon fleeced with white clouds. And Hollenberg was far too busy with his landing to talk now. The rocket-captain seemed, indeed, relieved not to be questioned. The rush inward, the roar of air outside the hull, the brake-blasts banging like the triphammers of giants, the shadowed night side of the old planet swinging up to meet them.... When he stepped out onto the spaceport tarmac, Wales breathed deep of the cool night air. Earth air. There was none like it, for men. No wonder that they missed its tang, out there on Mars. No wonder old women in the crowded new cities out there still cried when they talked of Earth. He braced back his shoulders, buttoned the tunic of his UN uniform. He wasn't here to let emotion run away with him. He had a job. He got onto one of the moving beltways and went across the great spaceport, toward the high, gleaming cluster of lights that marked the port headquarters. Far away across the dark plain loomed the massive black bulks of rocket-ships. Dozens of them, hundreds of them. And more were coming in, on rigid landing-schedule. The sky above, again and again, broke with thunder and the great ships came riding their brake-jets of flame downward.