The other smiled, shrugged. "Can't help it. Big rush orders from Washington. They wouldn't even let us put this shot off till Monday. Had to get a fast test on this atomic fuel. I guess it's another of those things they think the Russians are up to." "Ahh, that's always an excuse for rushing. But I still say haste makes waste. Well, anyway we've got our orders so off it goes this morning. Trackers on the job?" "Sure, they're right on it. But we've still got to load the animals. This is going to be a high flier and the space-medicine people want in on it. Here's their stuff now." A light truck rolled up and two men came out carrying a crate. One of the automatic rolling cranes lifted them all up to the nose of the rocket. There, just below the instrument compartment, they opened another port and installed their burden, shutting the compartment again and sealing it. The major glanced at his watch, looked around. The main chamber was loaded, the tank had departed. At his order, the rolling scaffolding was swiftly detached and driven away. Now the rocket stood alone on its own fins, pointing skyward into the pink and orange dawn, its side a dazzling white, its nose a bright red, each section banded in green. "How far do you think it will go?" the major asked his assistant. "Anybody's guess," was the reply. "The fuel is untested and unpredictable. If this trick fuel fails to work, the whole thing will go up maybe six miles and then drop. If the atomic stuff turns into a bomb they'll hear the bang in Las Vegas. If it works as they expect, it might go up several hundred miles, maybe even more. It could make a better satellite rocket than the ones we've got up already. In fact that's what they're hoping. They think they may be able to make this the start of a real space-platform program--for once carrying a pay load up worth the carrying. But who knows?" The two climbed into a car and drove to where the concrete dugout was located. Entering it they nodded to the communications men and other engineers already gathered. The major took his place at the firing panel. He looked at his timer, waited a few minutes. Gradually the small talk ceased and a hush fell over the little guiding post. The major reached for the firing button. * * * * * Back in the rocket, Robin opened his eyes. The first thing he noticed when his head cleared from the grogginess of his deep sleep was a slight hissing noise somewhere below him. The air felt different in his little compartment. Somewhere a thin stream of oxygen was escaping into the chamber. He twisted around, felt about with his hands, located it. There was a thin line of holes along the seam of the padding underneath him. Now he heard other noises. Below him, a faint chattering, a scolding, the sound of something scratching. He put his ear down near the hole from where the air was issuing and listened.