For long moments there was silence. Rip felt for a solid foothold, found one, and flexed his knees. He kept his back straight and his eyes on the crater rim. His hands were occupied with two air bottles taken from his belt, and his thumbs were on their valve releases. He waited patiently for word from Santos that his helmet glow had been seen. Santos yelled, "Now!" Rip's legs straightened with a mighty thrust. He flashed into space headfirst, at an angle that took him over the crater's rim and fifty feet above the ground. He caught a glimpse of Santos' helmet, glowing like a pink balloon, and of the three Connies facing it. Rip's arms flashed above his head. His thumbs compressed. Air spurted from the two bottles, driving him downward feetfirst, directly at the heads of the Connies! CHAPTER TEN Get the Scorpion! From the corner of his eye, Rip saw Dowst's heavy space boots and knew the private was right with him. As they drove down, one of the Connies stepped a little distance away from the others, probably to get a better look at Santos. The Connie sensed something and turned, just as Rip and Dowst flashed downward on his two mates. Rip's boots caught one Connie where his bubble joined his suit, and the impact drove the man downward to the unyielding surface of the asteroid with a soundless smash. Rip threw up his arms to cushion his helmet as he struck the ground beyond his enemy. He threw the air bottles away. He fought to keep his feet under him and almost succeeded, but his knees hit the ground, and pistol and knife bit into them painfully. Two figures came into his view, locked tightly together, arms flailing. It was Dowst and the second Connie. He got to his feet and was moving to the Planeteer's aid when Santos' voice shrilled in his helmet. "Sir! Look left!" Rip whirled. The Connie who had stepped aside was advancing, pistol in hand. His light caught Rip full in the face. The young officer thought quickly. The Connie hadn't fired. Why? Suddenly he had it. The man hadn't fired for fear of hitting his friend, who was battling with Dowst. Rip was in front of them. Quickly he dropped to one knee, reaching for his own pistol. The Connie wouldn't dare fire now. The high-velocity slug would go right through him, to explode in one of the struggling figures behind--and the wrong one might get it. The Connie saw Rip's action and tossed his pistol aside. He, too, knew he couldn't fire. He reached into a knee pouch and drew out his space knife. He leaped for the Planeteer. Rip pulled frantically at his pistol. It was stuck fast, probably caught in the fabric by his knee landing. The space knife wouldn't be caught. It was smooth, with no projections to catch. He shifted knees and jerked it out.