"It was Slough here. Twice a greenie made a mistake as to how far away he was: once on the street, when it didn't grab for him when it could have, and again in the theater, when Glodd motioned for him to come closer, and hit him accidentally. Both of them thought Slough was average human size. Both were looking at him from a low viewpoint, the first on its knees and Glodd sitting on the floor. That's when it occurred to me that their eye-sight must be two-dimensional. Of course it wouldn't bother them on their home planets, where everything was known by size and aerial perspective filled in their deficiencies. Probably their navigational instruments made up for their lack of depth perception in flight, too. But when I turned the Nazi Army onto them, they were baffled. They must have thought giants were coming up out of a hole under the theater. Which is why they ran like hell, and then blasted the town." "Very clever," said Slough. Jane echoed this, and Trace said to her quietly, "I'm not quite the uneducated slob you might think I was, baby." "I don't think anything of the sort! You're--you're a man, a fine tough intelligent man." She was so sincere she sounded angry. Trace glowed with pride. * * * * * There was a very long silence then. Nobody moved from their chosen vantage point. The hidden moon went down. At last Trace cleared his throat self-consciously. "I'd like to ask a question myself. Of you, Slough." After a slight pause, Slough said, "What is it, Trace?" "Well, you're a little too smart a geezer for reality, if you know what I mean. You figured those helmets for thought-radios, when it was a fantastic possibility that no normal man would have hit on so quick with so little to go on. Then you did things with the electronic device in that saucer that I couldn't have come up with in a coon's age." "I'm an engineer," said the tiny man. He chuckled. "And I read a lot of science-fiction." "Okay. Then there's this. Thirty-odd hours ago you had a badly broken left arm, which I set for you and put in a sling." Trace spoke slowly, almost with fear now that he voiced his suspicions. "Some time during our first raid on the town, you discarded the sling; when we were in the saucer, you fought and afterwards you worked on the instruments with both hands. It's impossible, but it must be true--your arm knit completely within a day." He turned and bending over Jane Kelly he stared wide-eyed at the dark figure of the little man. "Slough," said Trace huskily, "_what are you_?" Slough sighed. "Whatever I am, Trace Roscoe, I am not your enemy. No, nor ever shall be, yours or your people's. Look!" He cried out so suddenly that the four of them, shocked, stared out in the direction in which he gestured. "The saucers," he said, "they're rising!" "The gimmicked one?" asked Bill, whose eyes were bleary with lack of sleep.