confusion. Giant searchlights, both at the airport and in other parts of Phoenix, directed spears of light on the towering rocket that held the interest of all the world tonight. There was one light, far larger than the rest, with powerful condensing lenses and connected to a giant radar screen, which would guide Marsh home from his trip among the stars.

A high wire fence surrounded the launching ramp and blockhouses. International scientists and dignitaries with priorities formed a ring around the fence, but even they were not allowed inside the small circle of important activity. The guards waved the colonel and Marsh through the gate.

Marsh had spent many weeks in a mock-up of the tiny third stage in which he was to spend his time aloft, but he had never been close to the completely assembled ship until this moment. The three stages had been nicknamed, “Tom,” “Dick,” and “Harry.” Marsh swallowed as his eyes roved up the side of the great vessel, part of a project that had cost millions to perfect and was as high as a four-story building.

The gigantic base, “Big Tom,” was the section that would have the hardest job to do, that of thrusting the rocket through the densest part of the atmosphere, and this was a great deal larger than the other sections. Marsh knew that most of the ship’s bulk was made up of the propellant fuel of hydrazine hydrate and its oxidizer, nitric acid.

“We’re going into that blockhouse over there,” Colonel Tregasker said. “You’ll don your space gear in there.”

First a multitude of gadgets with wires were fastened to the cadet’s wrists, ankles, nose, and head. Marsh knew this to be one of the most important phases of the flight—to find out a man’s reaction to space flight under actual rocketing conditions. Each wire would telemeter certain information by radio back to the airport. After a tight inner G suit had been put on to prevent blackout, the plastic and rubber outer garment was zipped up around Marsh, and then he was ready except for his helmet, which would not be donned until later.

Marsh and the colonel went back outside. The open-cage elevator was lowered from the top of the big latticed platform that surrounded the rocket. The two got into the cage, and it rose with them. Marsh had lost most of his anxiety and tension during the activities of the day, but his knees felt rubbery in these final moments as the elevator carried him high above the noisy confusion of the airport. This was it.

As they stepped from the cage onto the 

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