第10章 The Second Descent

For a long moment nothing moved. The thousands of returns held their stations in a slow, revolving wall, close enough now that the individual signatures bled together on the screen, and the Shinsengumi sat at the center of it like a seed in a fruit — encased, catalogued, awaited. The first probe came out of the dark at bow height, a ribbon-thin thing moving so fast the sonar painted it as a smear. The forward array caught it on Sato's reflex alone; the blue-white pulse lit the water like lightning through fog, and the smear broke apart into drifting motes that the dark drank without comment. Two more came from the flanks. He killed one. The other struck the hull forward of the sail with a sound like a hammer on a church bell, and every man in the boat felt it in his teeth. 'Casualties?' Callahan called. 'None,' Webb answered from the ballast station. 'Plating scored. She held.' 'They are testing us,' Sato said. His voice had gone very quiet, very level — the voice of a man reading his own death warrant to check it for errors. 'The way a pack tests a herd. Taking the measure of our responses. Learning which of us fires and which of us freezes.' Reyes had both hands pressed over his ears, though the attack was not acoustic. 'They're talking,' he whispered. 'All of them, all at once. It is like standing inside a bell with the clapper going. Captain, I can't filter it. There are too many voices down here, and every single one of them is saying my name.' 'Then you will listen to mine instead.' Sato crossed to the young man and gripped his shoulder hard enough to hurt. 'My voice. Only mine. Can you do that?' Reyes nodded, shaking. Callahan watched the wall revolve. Here was the truth of the trench, laid out plainer than any briefing had ever drawn it: they could not fight eleven thousand of anything, and they could not die here, because dying here meant the signal went unchallenged and the deep walked into the war above them unopposed. Which left one option, and only one, and it was the option every cornered animal had taken since the first animal drew breath. 'We go up,' he said. 'Through them.' Sato looked at the screen a long moment. Then his finger moved across the plot, tracing a narrow seam he saw in the revolving wall — a thin place, a gap in the congregation, opening and closing like a gill. 'There. Nine degrees off vertical, and we hold the array charged the entire climb. We do not stop. We do not answer hails. We do not fire unless something blocks the seam.' He met Callahan's eyes. 'You will call the contacts, Lieutenant. My hands will be full.' Callahan took the targeting station and strapped in. Above them lay eight thousand feet of hostile water; below lay the wreck of the city and the redirected signal, sinking its roots into the bones of the planet. Between the two, the swarm turned its thousand green eyes toward the small steel seed at the center of the fruit, and began, with terrible patience, to close. The sonar screen was a kaleidoscope of green dots, each one representing a contact, a presence, a threat. They surrounded the Shinsengumi on all sides, moving in patterns that were almost — no, not almost. Exactly — like a school of fish, like a flock of birds, like a swarm of insects. Coordinated. Purposeful. Hungry. "We are outnumbered," Reyes said, his voice steady despite the terror in his eyes. "Outgunned. Outmatched. We cannot win this." "Then we do not win," Sato said. "We survive." He manipulated the controls, and the Shinsengumi turned, presenting its forward array to the nearest cluster of contacts. The array hummed, charging, and Sato held his breath as the creature closest to them — a smaller version of the sentinel they had just destroyed — closed in. "Fire," he said, and the blue-white beam lanced out, striking the creature and sending it spinning away in a cloud of green light. But for every one they destroyed, two more took its place. The swarm was endless, a sea of hungry eyes and hungry minds, converging on their position with a determination that was almost human. "We cannot hold them off forever," Callahan said. "We need a plan. We need to get out of here." "There is no 'here' to get out of," Sato replied. "We are at the bottom of the Mariana Trench, twelve thousand feet below the surface, surrounded by creatures that have been waiting in the dark for longer than humanity has existed. The only way out is through." "Through what?" Sato looked at him, and in his eyes Callahan saw something that made his blood run cold. Hope. Not the hopeful hope of a man who believes things will get better, but the desperate hope of a man who has nothing left to lose. "Through them," Sato said. "Through the swarm. We fire our way through, and we climb. We climb as fast as we can, and we pray that we are faster than they are." Webb laughed — a harsh, bitter sound. "Pray? You want us to pray? We are soldiers, not superstitious fools." "We are men trapped in a metal tube at the bottom of the ocean, surrounded by things that should not exist," Sato said calmly. "I think prayer is well within our capabilities." Callahan thought about it. He thought about the choices he had made since being shot down — choices that had led him from a burning bomber to a Japanese submarine to the bottom of the Mariana Trench. Each choice had seemed reasonable at the time, logical, necessary. And yet here he was, facing extinction at the hands of creatures that defied every law of biology and physics he had ever learned. "Do it," he said. "Fire your way through. We climb." Sato nodded, and the Shinsengumi lurched forward, its engines screaming as it pushed against the pressure of the deep. The forward array fired again and again, each burst of blue-white light carving a path through the swarm, sending creatures spinning away in clouds of luminescent dust. But the swarm kept coming, relentless, undeterred, driven by a hunger that was older than civilization. "Three thousand feet," Sato called. "Four thousand. Five thousand." The pressure was easing, the water growing warmer, but the swarm was still with them, still closing in. Callahan watched through the viewport as shapes moved in the darkness — vast, incomprehensible shapes that dwarfed even the creatures they had been fighting. Things that had been sleeping in the deep for longer than humanity had walked the earth, and were now waking. "Six thousand. Seven thousand. Eight thousand." The swarm was thinning, the creatures falling behind as the Shinsengumi climbed faster, but Callahan could feel them still — a presence in the water, a pressure in his mind, a whisper at the edge of consciousness that said: You cannot escape us. We are everywhere. We have always been everywhere. And we will wait. "Nine thousand. Ten thousand. Eleven thousand." And then they broke through the trench wall, into the open ocean, into water that was darker but not quite as crushing, not quite as suffocating. The swarm did not follow. They stopped at the edge of the trench, watching, waiting, their green eyes gleaming in the darkness. "We made it," Webb whispered. "We actually made it." But Callahan was not so sure. He looked back at the trench, at the darkness that swallowed the swarm, and he felt a chill that had nothing to do with the ocean. Whatever was down there — whatever had been waiting in the deep — it had not given up. It had simply retreated, biding its time, waiting for the surface world to become loud enough, violent enough, to wake it again. The war was not over. It had only just begun.