Joe saw a tiny projection near the base of it. It was an office building for clerks and timekeepers and other white-collar workers. He strained his eyes again and saw a motor truck on the highway. It looked extraordinarily flat. Then he saw that it wasn't a single truck but a convoy of them. A long way back, the white highway was marked by a tiny dot. That was a motor bus. There was no sign of activity anywhere, because the scale was so great. Movement there was, but the things that moved were too small to be seen by comparison with the Shed. The huge, round, shining half-sphere of metal stood tranquilly in the midst of emptiness. It was bigger than the pyramids. The plane went on, descending. Joe craned his neck, and then he was ashamed to gawk. He looked ahead, and far away there were white speckles that would be buildings: Bootstrap, the town especially built for the men who built the Space Platform. In it they slept and ate and engaged in the uproarious festivity that men on a construction job crave on their time off. The plane dipped noticeably. "Airfield off to the right," said the co-pilot. "That's for the town and the job. The jets--there's an air umbrella overhead all the time--have a field somewhere else. The pushpots have a field of their own, too, where they're training pilots." Joe didn't know what a pushpot was, but he didn't ask. He was thinking about the Shed, which was the greatest building ever put up, and had been built merely to shelter the greatest hope for the world's peace while it was put together. He'd be in the Shed presently. He'd work there, setting up the contents of the crates back in the cargo space, and finally installing them in the Platform itself. The pilot said: "Pitot and wing heaters?" "Off," said the co-pilot. "Spark and advance----" Joe didn't listen. He looked down at the sprawling small town with white-painted barracks and a business section and an obvious, carefully designed recreation area that nobody would ever use. The plane was making a great half-circle. The motor noise dimmed as Joe became absorbed in his anticipation of seeing the Space Platform and having a hand in its building. The co-pilot said sharply: "Hold everything!" Joe jerked his head around. The co-pilot had his hand on the wheel release. His face was tense. "It don't feel right," he said very, very quietly. "Maybe I'm crazy, but there was that sandy-haired guy who put his hand up in the wheel well back at that last field. And this don't feel right!"