They began retracing their steps toward the fresh cave-in, looking for side tunnels or shafts they may have missed. There was nothing. Gideon was exhausted: his ears rang, his head pounded, and his mouth was full of muddy paste. They were both coated with dust and could hardly breathe in the choking air. Arriving at the cave-in, Gideon inspected it with the flame of the lighter. It was a massive heap of rocks, wall-to-wall, impassable. Gideon peered up at the irregular hole in the ceiling from which the rocks had fallen.
He snapped the lighter off and they were once again plunged into darkness. He could hear muffled voices from the far side.
“What now?” Alida asked.
They sat in silence for a while. Gideon finally removed the lighter, flicked it on, held it out.
“What are you doing?”
“Looking for movement of air. You know, like they do in novels.”
But the flame burned utterly straight. The dust was so thick he could barely see. He flicked it off again. “It’s possible,” he said, “this cave-in opened a hole in the ceiling up there. I’m going up to check.”
“Be careful. It’s unstable.”
Gideon climbed the pile of rock. Each footfall sent more rocks and pebbles sliding down, including some larger ones that detached from the ceiling and crashed onto the pile. The rocks led all the way up to the concave hole in the ceiling. He scrambled to the top, sliding back a little with each step, the dust choking him, invisible rocks raining down all around—and suddenly, at the very top, he found air that was fresh and clear. He looked up and saw a star.
They crawled out into the dark and lay in a patch of sweet-smelling grass at the bottom of a ravine, coughing and spitting. A small stream ran down the ravine, and after a moment Gideon got up, crawled to the stream on his hands and knees, washed his face, and rinsed his mouth. Alida did the same. They appeared to be below the Los Alamos plateau, in the warren of heavily forested tributary canyons cutting down to the Rio Grande. Gideon lay back on the ground, breathing hard and looking up at the stars. It was incredible they had escaped.
Almost immediately he could hear the throbbing sound of a chopper.
Damn. “We’ve got to keep moving,” he said.
Alida stretched herself out on the grass, her filthy blond hair in tangles around her face, her once-white shirt the color of a dirty mouse, even the bloodstains obscured by dust. “Just give me a moment to catch my breath,” she said.
44
WARREN CHU SAT at his desk, sweating profusely and wishing the whole thing would be over. The FBI agent paced in the small office like a caged lion, occasionally asking a question before settling back into yet another long, excruciating silence. The rest of the Feds and security agents had disappeared into the tunnels; at first he’d heard a fusillade of shots, then the noises had grown increasingly muffled and distant before ultimately fading to silence. But this agent, the one named Fordyce, had stayed behind. Chu shifted, trying to unstick his sweating buttocks from the faux-leather chair. The A/C in this billion-dollar facility was, as usual, barely adequate. Chu was aware his comportment during the hostage situation had not exactly been heroic, and that added to his uneasy feeling. He consoled himself with the thought that he was still alive.
Fordyce wheeled around yet again. “So Crew said that? Exactly that? That somebody hacked into his computer while he was on vacation?”
“I don’t remember exactly what he said. Someone had it in for him, he said.”
Pace, turn. “And he claimed the emails had been planted?”
“That’s right.”
The FBI agent slowed. “Is there any way they could have been planted?”
“Absolutely no way. This is a physically isolated network. It isn’t connected to the outside world.”
“Why not?”
Chu was taken aback by the question. “Some of the most sensitive information in the country is in this system.”
“I see. So there’s no way those emails could have been planted by someone on the outside.”
“No way.”
“Could someone on the inside plant them? Like, for example, could you have planted them?”
A silence. “Well,” said Chu, “it wouldn’t be impossible.”
Fordyce stopped pacing, stared at him. “How would one go about it?”
Chu shrugged. “I’m one of the security administrators. In a highly classified network like this, somebody’s got to have full access. To make sure everything’s kosher, see. It would have