Peter was crawling after him slowly. There was a sudden spurt of dust from the ground just behind him, like a tiny geyser. "Von's still shooting at you," said Robin. "Hurry!" Peter slid quickly into refuge behind the ridge at Robin's side. Twisting his body, he unstrapped the light carbine rifle from his back, brought it around in front of him. "Have you ever fired a rifle or a pistol, Robin?" he asked. "I learned some target shooting at school," said Robin. "I was a pretty fair shot. But I never handled a revolver." Peter slid the rifle over to him. "Then you use this. I'll use my pistol. We'll have to get him before he gets us." Robin held the rifle awkwardly. He glanced at it, saw that it was loaded, slid the bolt action. "I don't like this," he said. "If there was only some way we could capture him and hold him until we're rescued. You said he's a good man with rockets. Maybe he can be straightened out mentally if we can get him back to Earth." Peter shrugged, grunted. "Don't waste time dreaming. Sure he was a good engineer. But right now it's him or us. If he has his way, none of us will ever return to Earth alive. Just remember he's doing his very best to kill us--we cannot dare do any less. Sure, if we get a break, we'll capture him. Right now, though, we'd better shoot him or we'll never get out of this alive." Peter suited his action to his words. He clumsily forced his thickly gloved finger through the trigger guard and grasped the pistol. He swiftly raised up, aimed, and pulled the trigger. There was a flash of red and simultaneously Peter fell over backward and rolled over once with a yell of pain. Robin turned, stricken with horror. "What happened! Are you hit?" Peter's voice came back. "No, I'm not hit, but I almost wrenched my arm off! It was the gun's recoil, the kick! I completely forgot what a terribly strong recoil a pistol would have on the Moon. It was like holding a rocket engine in my hand for a split second. It simply hurled me right over." Peter rolled himself over on his chest, resuming his position next to Robin. "We'll have to be careful when we fire. Remember the kick will be many times stronger than back on Earth." There was another spurt of dust to one side of them. Another evidence of Von Borck's shooting. Possibly he had caught a glimpse of Peter's scramble. Robin slid the rifle out in front of him, cocked it for firing. He crawled to a break in the ridge, propped the butt of the gun against a small outcropping of rock along the surface, rolled himself clumsily into position. Raising his head, he saw the figure of Von Borck still standing against the narrow entrance to the wall. He aimed the rifle as well as he was able under the handicaps, pressed it hard, and pulled the trigger.