Dawn touched the High Sierras as the station whirled in from the Pacific, 500 miles high.

"Bert. Get me a radar fix on White Sands."

Morrow huddled over the small computer, feeding in radar information as it came from his assistant.

"Rocket away!" Blared a radio speaker on the bulkhead. The same message carried to the four space-suited tugmen floating beyond the rim of the wheel, linked with life-lines.

Jones watched interestedly out the port.

"There she is!" he yelled.

Sunlight caught the ascending rocket, held it in a splash of light. The intercept technique was routine now, a matter of timing, but for a moment Kevin succumbed to the frightening optical illusion that the rocket was approaching apex far below the station. Then, slowly, the slender cylinder matched velocity and pulled into the orbit, crept to its destination.

With deceptive ease, the four human tugs attached magnetic shoes and guided the projectile into the space station hub with short, expert blasts of heavy rocket pistols.

"Take over Bert," Morrow directed, "I guess I'm the official greeter." He hurried out of the control room, through a short connecting tube and emerged floating in the central space surrounding the hub where artificial gravity fell to zero. Air pressure was normal to transfer passengers without space suits.