For a short time Kurt headed straight away from the starting point, but Ross soon heard him counting slowly to himself as if he were timing something. At the count of twenty the cat swung to the right and made a wide half circle which was copied at the next count of twenty by a similar sweep in the opposite direction. After this pattern had been repeated for six turns, Ross found it difficult to guess whether they had ever returned to their first course. When Kurt stopped counting he asked, "Why the dance pattern?" "Would you rather be scattered in little pieces all over the landscape?" the other snapped. "The base doesn't need fences two miles high to keep us in, or others out; they take other precautions. You should thank fortune we got through that first mine field without blowing...." Ross swallowed, but he refused to let Kurt know that he was rattled. "So it isn't as easy to get away as you said?" "Shut up!" Kurt began counting again, and Ross had some cold apprehensive moments in which to reflect upon the folly of quick decisions and wonder bleakly why he had not thought things through before he leaped. Again they sketched a weaving pattern in the snow, but this time the arcs formed acute angles. Ross glanced now and then at the intent man at the wheel. How had Kurt managed to memorize this route? His urge to escape the base must certainly be a strong one. Back and forth they crawled, gaining only a few yards in each of those angled strikes to right or left. "Good thing these cats are atomic powered," Kurt commented during one of the intervals between mine fields. "We'd run out of fuel otherwise." Ross fought down the impulse to move his feet away from any possible contact point with the engine. These machines must be safe to ride in, but the bogy of radiation was frightening. Luckily, Kurt was now back to a straight track, with no more weaving. "We are out!" Kurt said with exultation. But he added no more than just the reassurance of their escape. The cat crawled on. To Ross's eyes there was no trail to follow, no guideposts, yet Kurt steered ahead with confidence. A little later he pulled to a stop and said to Ross, "We have to drive turn and turn about--your turn." Ross was dubious. "Well, I can drive a car--but this----" "Is fool proof." Kurt caught him up. "The worst was getting through the mine fields, and we are out of that now. See here--" his hand made a shadow on the lighted instrument panel, "this will keep you straight. If you can steer a car, you can steer this. Watch!" He started up again and once more swung the cat to the left. A light on the panel began to blink at a rate which increased rapidly as they veered farther away from their original course. "See? You keep that light steady, and you are on course. If it begins to blink, you cast about until it steadies again. Simple enough for a baby. Take over and see."