The quiet came again. The earth, seen through the side port, seemed tremendously far away. It was a study in greens and yellow-browns and whitish ragged areas where the eye was blocked by cloud formations. Straight out the sky was black, starry. Prochaska reached up and swung the glare shield over the forward port. The sun, looked at even indirectly, was a blinding orb, intolerable to the unprotected eye. Night above ... day below. A sun that blazed without breaking the ebon skies. Strange, Crag mused. He had been prepared for this, prepared by long hours of instruction. But now, confronted with a day that was night, he could only wonder. For a moment he felt small, insignificant, and wondered at brazen man. Who dared come here? I dared, he thought. A feeling of pride grew within him. I dared. The stars are mine. * * * * * Stage three was easy by comparison. It began with the muted roar of thrust chambers almost behind them, a noise spectrum almost solely confined to the interior of the rocket. Outside there was no longer sufficient air molecules to convey even a whisper of sound. Nor was there a pressure build-up. The stage three engine was designed for extremely low thrust extended over a correspondingly longer time. It would drive them through the escape spiral--an orbital path around the earth during which time they would slowly increase both altitude and speed. Crag's body felt light; not total weightlessness, but extremely light. His instruments told him they were breaching the exosphere, where molecular matter had almost ceased to exist. The atoms of the exosphere were lonely, uncrowded, isolated particles. It was the top of the air ocean where, heretofore, only monkeys, dogs and smaller test animals had gone. It was the realm of Sputniks ... Explorers ... Vanguards--all the test rockets which had made the Aztec possible. They still sped their silent orbits, borne on the space tides of velocity; eternal tombs of dogs and monkeys. And after monkey--man. The communicator gave a burp. A voice came through the static. Drone Able was aloft. It had blasted off from its blasting pad at Burning Sands just moments after the Aztec. Prochaska bent over the radarscope and fiddled with some knobs. The tube glowed and dimmed, then it was there--a tiny pip. Alpine came in with more data. They watched its course. Somewhere far below them and hundreds of miles to the west human minds were guiding the drone by telemeter control, vectoring it through space to meet the Aztec. It was, Crag thought, applied mathematics. He marveled at the science which enabled them to do it. One moment the drone was just a pip on the scope, climbing up from the sere earth, riding a firestream to the skies; the next it was tons of metal scorching through space, cutting into their flight path--a giant screaming up from its cradle.