Gaddon could hear the guard draw in his breath sharply, but the man kept walking around to the far side of the second rocket cradle.

"You can't mean that you're going to go up—"

The soldier's voice broke off uncertainly and Gaddon laughed shortly.

"You are a discerning man, soldier. That is exactly what I intend to do. And I warn you, don't make a false move or I'll shoot. My plans are made and I intend to carry them out!"

They had reached the far side of the second rocket now, away from view of the rest of the buildings, out of sight. Away in the distance the faint outlines of the great wire fence circling the testing grounds could be seen, and beyond that, the twinkling lights of Tucson, already visible in the dusk.

"This is far enough," Gaddon said suddenly.

He watched as the soldier halted. Then Gaddon moved up quickly behind the man. Before the soldier sensed what was about to occur, Gaddon's hand raised over his head and the butt of the weapon in his hand crashed against the back of the man's head.

There was a soft groan in the shadows as the soldier crumpled limply to the ground. In the silence that followed, Gaddon's tense breathing was the only sound. He looked down at the still body of the unconscious man, then he quickly turned and retraced his footsteps back the way he had come.

When he had reached the far side of the first rocket, he stopped before the metal steps of the cradle leading up to the closed door of the rocket. He looked quickly about him, making sure that nobody was in close proximity, then he threw his gun under the rocket beside the rifle of the soldier, and ran up the steps.

A cool breeze sprang up in the western night and whispered softly around Gaddon as he fumbled for a moment with a switch set in the smooth side of the rocket beside the sealed door.

There was a click, finally, and the door slid open.

Gaddon took a last look about him and then quietly slipped through the opening. A moment later there was the sound of the door sliding shut.

Inside the rocket, Gaddon lit a small pocket flash and looked around him. A soft sound struck his ears. The mewing sound of a cat. He turned the flash on the startled animal and a low laughter crept from his 

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