Lieutenant Colonel Albert Rogers took the radio message in hand and climbed out of the rear door of the communications trailer, down the corrugated metal steps to the crunchy white sand. He didn't really want to think about the implications of his orders; thinking on such an esoteric level would do him no good whatsoever. The Guest was dead; Arthur Gordon had ordered his team to investigate the interior of the Furnace. Rogers would not allow anyone but himself to do it.

He had been planning for such a mission. He had drawn incomplete diagrams of the bogey's interior in a small notebook, little more than suppositions based on length, height, width, and the angle and length of the tube running through solid rock. Climbing the tube would present no problem—even where it angled straight up, he could take it like a rock climber in a chimney, back against one side, legs jackknifed and feet pressed against the other, inching his way up. He would carry a miniature digital video recorder, smaller than the palm of his hand, and a helmet-mounted finger-sized video camera. A Hasselblad for high-resolution pictures and a smaller, lighter automatic film-packed 35mm Leica completed his equipment. He doubted the investigation would take more than a day. There was, of course, the possibility that the bogey was honeycombed with interior spaces. Somehow, he doubted that.

As a sergeant and corporal brought the supplies he requested from the stores trailer, he drew up his itinerary and discussed emergency measures with his second-in-command, Major Peter Keller. Rogers then donned the chest pack and heavy climbing boots, coiled three lengths of rope neatly and hung them from his belt, and walked around the south side of the bogey.

He checked his watch and set its timer. It was six A.M. The desert was still wrapped in gray dawn, high cirrus stretching from horizon to horizon in a thin layer. The desert smelled of clean cold air, a hint of dry creosote bush.

"Give me a lift," Rogers instructed Keller. The major meshed the fingers of both hands to make a stirrup and Rogers stepped into the stirrup with his left foot. With a heave-ho, Keller lifted him into the tunnel. Rogers lay on his back in the angled shaft for a moment, staring at the first bend, about forty feet into the-rock. "Okay," he said, punching the button on his watch for the timer to start. "I'm off."

They had decided against unwinding a telephone wire and communicating directly with him as he climbed. The video recorder was equipped with a small lapel mike, into which he would make oral observations; the video camera would make an adequate record of what he saw from moment to moment. If time and opportunity presented, he would take pictures with the other cameras.

"Good luck, sir," Keller called as he began his low-angle ascent up the tunnel.