That he took in at one glance. Then he was looking at the control panels. The switches and buttons were all marked for machine-control in different steps of power-unit production. That was all for the big stuff, powered centrally. There weren't any controls for lifters or conveyers or other mobile equipment. Evidently they were handled out in the shop, from mobile control-vehicles. He did find, on the communication-screen panel, a lot of things that had been left on. He snapped them off, one after another, snapping them on when a screen went dark. There were fifteen or twenty robots, some rather large, in the air or moving on the floor by now. "We can't do anything here," he told Anse. "These are the shop-cleaning robots. They were the last things used here when the place closed down, and the two supervisors were probably controlled from a vehicle, and it's anybody's guess where that is now. When you threw that switch, it sent out an impulse that activated them. They're running their instruction-tapes, and putting the others through all their tricks." Three more shots went off. Jerry Rivas was shouting: "Hey, whattaya know! I killed one of the buggers!" There were any number of ways in which a work-robot could be shot out of commission with a pistol. All of them would be by the purest of pure luck. The next time we go into a place like this, Conn thought, we take a couple of bazookas along. "Turn everything off and let's go. See what we can do outside." Anse put on his flashlight and pulled the switch. They got into the lift and rode down, going outside. As soon as they emerged, they saw a rectangular object fifteen feet long settle over their aircar, let down half a dozen clawed arms, and pick it up, flying away with it. It had taped instructions to remove anything that didn't belong in the aisleway; it probably asked the supervisor about the aircar, and the supervisor didn't return an inhibitory signal, so it went ahead. Conn and Anse both shouted at it, knowing perfectly well that shouting was futile. Then they were running for their lives with one of the crablike all-purpose jobs after them. They dived under the slightly raised bed of a long belt-conveyer and crawled. Jerry Rivas fired another shot, somewhere.