And indeed no guard challenged them. There were armed men watching for all intruders out on the desert beyond the runways, but once inside, Ryd's borrowed blue seemed to serve as passport enough. Nonetheless, the passport's knees were shaking when they stood at last, inconspicuous still, at the shadowed base of the Communications Tower.
Not far off, a half-dozen dignitaries, huddled close together in the midst of these Cyclopean man-made things that dwarfed their policies, their principles and ambitions, stood talking rather nervously with two officers, aristocratically gaudy in the scarlet of the Martian Fleet. Blue-clad guardsmen of Earth watched from a distance—watched boredly enough.
And out on the steel-stripped tarmac, under the solenoid of Number Two Runway, lay a towship, backed like a stegosaur with its massive magnets—the Shahrazad, panting like a dragon amid rolling clouds of steam. She was plainly ready to go into space. The bottom dropped out of Ryd's stomach before he realized that a warning at least must be sounded before the ship could lift. But that might come any moment now.
"Relax," said Mury in a low voice. "Nothing's gone wrong. We'll be aboard the Shahrazad when she lifts." For a moment his black eyes shifted, hardening, toward Runway Four. The Martian warship lay there beyond the solenoid, a spiteful hundred-foot swordfish of steel, with blind gunvalves, row on row, along its sleek sides and turret-blisters. It had not yet been tugged onto the turntable; it could not be leaving again very soon, though Earth weight was undoubtedly incommoding its crew. About it a few figures stood that were stiffly erect and immobile, as tall as tall men. From head to toe they were scarlet.
"Robots!" gasped Ryd, clutching his companion's arm convulsively. "Martian soldier robots!"
"They're unarmed, harmless. They aren't your police with built-in weapons. Only the humans are dangerous. But we've got to move. For God's sake, take it easy."
Ryd licked dry lips. "Are we going—out into space?"
"Where else?" said Mury.
The official-looking individual in the expensive topcoat and sport hat had reached the starboard airlock of the towship before anyone thought to question his authorization, escorted as he was by a blue-uniformed guardsman. When another sentry, pacing between runways a hundred yards from the squat space vessel, paused to wonder, it was—as it came about—just a little too late.