It was a tour of inspection. They went into a building, big, looking like any other big and useful building of the ancients, gray stone walls, windows with ragged spears of glass. Inside, though, it wasn't like the others. Two sub-basements down, Tropile winced and turned away from the flood of violet light that poured out of a quartz bull's-eye on top of a squat steel cone. "Perfectly harmless, Tropile--you don't have to worry," Haendl boomed. "Know what you're looking at? There's a fusion reactor down there. Heat. Power. All the power we need. Do you know what that means?" He stared soberly down at the flaring violet light of the inspection port. "Come on," he said abruptly to Tropile. Another building, also big, also gray stone. A cracked inscription over the entrance read: ORIAL HALL OF HUMANITIES. The sense-shock this time was not light; it was sound. Hammering, screeching, rattling, rumbling. Men were doing noisy things with metal and machines. "Repair shop!" Haendl yelled. "See those machines? They belong to our man Innison. We've salvaged them from every big factory ruin we could find. Give Innison a piece of metal--any alloy, any shape--and one of those machines will change it into any other shape and damned near any other alloy. Drill it, cut it, plane it, weld it, smelt it, zone-melt it, bond it--you tell him what to do and he'll do it. "We got the parts to make six tractors and forty-one cars out of this shop. And we've got other shops--aircraft in Farmingdale and Wichita, armaments in Wilmington. Not that we can't make some armaments here. Innison could build you a tank if he had to, complete with 105-millimeter gun." "What's a tank?" Tropile asked. Haendl only looked at him and said: "Come on!" * * * * * Glenn Tropile's head spun dizzily and all the spectacles merged and danced in his mind. They were incredible. All of them. Fusion pile, machine shop, vehicular garage, aircraft hangar. There was a storeroom under the seats of a football stadium, and Tropile's head spun on his shoulders again as he tried to count the cases of coffee and canned soups and whiskey and beans. There was another storeroom, only this one was called an armory. It was filled with ... guns. Guns that could be loaded with cartridges, of which they had very many; guns which, when you loaded them and pulled the trigger, would fire. Tropile said, remembering: "I saw a gun once that still had its firing pin. But it was rusted solid." "These work, Tropile," said Haendl. "You can kill a man with them. Some of us have." "_Kill_--"