Paul wondered; they were far from the house it was true, but they were almost as far from the spacecraft now as they had been when standing on the front steps of the house. His mathematical mind made a quick computation and he smiled, audibly chuckling. "What?" said Nora in a low voice. "I was just thinking that we are now point seven zero seven of the original distance from the spaceship." Nora laughed gently. "Some man," she said. "Has no time to kiss me in my room, but has time to play trigonometry here." Paul patted her gently. "Trig is something I can do without putting all I've got into it. No--" From a distance there came the faint ringing of a bell. "Nice man," said Nora. "I forgive you--until later." Lights went on across the plain, men stormed out of the big building and leaped into a command-car parked on the road in front of it. The command car roared into life and started across the plain toward the dormitory. "Now!" said Paul. "Down!" They hit the dirt side by side as the headlights swung around. Then the beams of light were gone and Nora and Paul were upright once more and running. Noise meant nothing in face of the roar from the jeep's engine; the car was careening across the plain madly, and Paul knew that no one aboard the car would be able to keep a sharp lookout for any running figures. About all they could do was to hang onto the racketing jeep. The spacecraft loomed larger before them. The roar of the jeep died as the car reached the dormitory, and Paul looked back over his shoulder to watch the men pile out of the car and head into the building on a dead run. "Faster!" he breathed. The ship was a hundred yards away--and Paul could see Stacey and Morrow running in from the other side--when there was the roar of the engine again. The headlights swung around to catch them, but this time they did not care. It was run for it; no time to play cat and mouse. The engine whined high, Paul put on more speed, running away from Nora. "Paul--" "Come on," he snapped over his shoulder. "Don't talk--run!" He raced away from her, outdistanced her; the jeep's roar coming louder and louder. Paul reached the spacelock and fumbled with the outside controls. Ponderously the lock opened, swinging aside just as Stacey and Morrow came panting up. "In!" snapped Paul. Then he turned, caught Nora's hand, and hurled her headlong through the opening. He leaped in after her, tripped over her sprawling ankle, caught the flipper switch to the door as he fell, and scrambled to his feet as the spacelock door started to close. The roar of the engine still came through the closing slit, a shot pinged against the steel hull. Paul forgot about the spacelock and headed up the runway to the control room.