If all went according to plan, in three or four years an international armada of ships would form a circle a hundred miles in radius in the expanse of the north Pacific. In the centre of the circle would float an artificial, portable island. On the island would be an immensely powerful and complex piece of machinery designed for a suicide mission. The product of a dedicated, cooperative effort between the superpowers, it would produce intense beams of laser light, finely tuned and aimed by the gravitational pull of the black hole itself. Since there would be no way to control the orbit of the hole, the device would be located where orbit perturbations by irregularities in the earth were minimal. The position of the device would be precisely fixed by accurate orbital calculations to be steadily refined over the years.
   In addition to settling on the basic engineering attack, there had been a host of ticklish political problems to resolve. Paramount had been the continuing demand by the Russians that the United States cease work on beam weapons. Isaacs had admired the consummate skill of the team from the State Department. They had pointed out how item after item which the Soviets wanted banned was, after all, related to the massive effort before them. Other projects they discarded spontaneously, activities that had to take second seat to the main effort anyway. Neither country had the resources to devote to full scale development of beam weapons when faced with the resource-devouring assault on the black hole. In the final analysis, the Soviets had enough concessions to feel they had accomplished their goal, and the United States did not feel significantly weakened politically in the process.
   Another issue had been the manner in which to treat the results of the test. If the project were successful, an explosion of considerable violence would ensue. Technically, it was not in violation of the Nuclear Test Ban Treaty, but in certain quarters all doubt must be forestalled, and that in turn called for an explanation of the predicament which demanded the undertaking. The NATO allies and Japan would be notified and sworn to secrecy and certain aid would be solicited from them. All would be allowed observers stationed at the site.
   Dissension over the role of the Chinese had nearly split the meeting, but a precarious accord had been reached. When the time came, the Chinese would be informed of the test, but the underlying reason would only be hinted. The Soviet Union had chosen to inform none of the countries in its orbit, and the US had not demurred.
   Isaacs gathered up the report with its final corrections and headed for the outer office. His eyes skimmed the brass letters on the doorway — Deputy Director of Scientific Intelligence — and the ones below — Robert B. Isaacs. The report was virtually his last official act in that capacity. There had been no scandal, no public condemnation, just the gentle irrefutable suggestion. He thought of his new position with the Georgetown University Center for International Studies, amused at the irony. After years of suspicion and mistrust of academics, he would join their ranks. He was actually looking forward to it. Time to do some thinking. Some writing. 'Forget it,' Martinelli had said. 'You'll be as busy as ever.'
   Kathleen Huddleston was in the outer office. 'Here's the last of it,' he said to her. 'I sure appreciate your staying late.'
   She acknowledged his gratitude with a smile and flipped expertly through the pages. 'This will just take a few minutes. It'll be on Drefke's desk when he comes in in the morning.'
   'Great,' Isaacs replied.
   He locked his office for the night, waved goodbye to Kathleen who was busy in front of the screen of her word processor and headed for the stairs. As he walked, his mind whirled with images of the fateful moment, the target of the gargantuan effort outlined in the report.
   At zero hour the lasers would be triggered and the tiny hurtling particle would be immersed in a carefully designed cocoon of photons. In lightning response, the hole would emit a corresponding burst of particles and energy in rapid cascade and shrink a fraction in size. From the distance of the monitoring flotilla, this unprecedented set of events would look similar to another man-made holocaust.
   Information of the blast would be fed nearly instantaneously to nerve centres around the world. Within hours it would be known whether the experiment was a success, whether the energy released and the shrinkage of the hole were as expected. Only then would they have some concrete basis for the hope that the mass of the hole could be peeled away, little by little, that the orbit could be shifted until the menace was free of the earth.
   As Isaacs descended the stairs, he thought of the arguments he had heard from Runyan, Humphreys, Phillips, and Korolev. He trusted these men and believed them when they argued that this was the only rational approach, but their descriptions of the possible pitfalls were deeply troubling. The response of the hole was predicated on deductions from Krone's data concerning previously unknown effects. Great effort would be put into developing theories to interpret the Krone experiments, but these theories could not be tested except by the ultimate event itself.
   If the current expectations were overoptimistic, the experiment could be a dud, the black hole continuing on its rapacious path. They could err in the opposite sense. If too much mass were liberated from the hole, too much energy released, the explosion could be catastrophically powerful, threatening the Pacific basin with deadly tsunamis and perhaps the whole earth with climatic changes.
   Even if the expectations were correct, the required engineering feats were enormously complex. If the aim of the laser were not perfect, the black hole might be kicked inaccessibly beneath the earth's surface rather than boasted further above it.
   Uncontrollably, Isaacs brooded on the implications if the experiment should fail. The warp and woof of human affairs were woven on a tapestry of time, comfortably stretched by geologists and astronomers to billions and billions of years. How would humanity change if the future were known to be abbreviated, longer than a single human life, but grimly truncated? Isaacs began to think of the future in its possible shortened version. Earthquakes beginning in several hundred years, growing ever stronger, more devastating. Then in several tens of thousands of years — nothing. A sun, eight planets, and a small, dark marble.
   Isaacs found himself in the foyer, headed outside. It was early on a spring evening as he pushed out through the door. No one was around as he paused at the head of the steps. The glass door swung shut behind him and the rubber, steel, and oil smell of man was replaced by the sweetness of growing things. The warm, heavily scented air engendered a feeling of being tugged gently but firmly downward, as if by a languid lover, but his eyes rose to the multitude of stars winking on in the deepening dusk.
   An oasis, he thought. There must be another.
   His eyes searched the bright points for a sign of welcome.

Epilogue: Three Years Later

   Alex Runyan responded groggily to the rap on his cabin door. I'm getting too old for this, he thought to himself. Then the significance of the day awoke in him like a spreading spark. He sat up, fumbled for the light, switched it on and fell back on the bunk, eyes in a tight squint, the light filtered blood-red through his lids. He lay for a moment feeling the gentle roll of the ship, to which he had never got quite accustomed. The USS Bradford, a Navy frigate, single shaft, displacing twelve hundred tons and rigged for research duty, had been his home for six weeks. He estimated he had logged a total of eight months of sea duty in bits and pieces since the project had got into full swing. He still preferred a floor that stayed where you aimed when you took a step. He swung his legs over the side of the bunk, grabbed his pants off the floor where he had discarded them only a scant few hours before and stood up. He leaned over and picked up one foot, preparing to thrust it into the trouser leg, but the slow tilt of the deck threw him off balance. He braced himself with one arm on the bulkhead and struggled awkwardly, failing to get a foot in the floppy denims while he held them with just one hand. He grabbed the trousers with both hands, lifted a foot, and was Kited off balance again. This time he was slow to drop the pants and reach for support. He smacked his head against the shelf over his bunk.
   'Goddamnit!' he swore at the offending protrusion. Chagrined, he sat down on the bunk to put the pants on like any landlubber. Everything's tougher at sea, he laughed to himself as he stood to hoist the pants, zip the fly, and fasten his belt. Then he sat again to shove his feet into sneakers and lace them up. That was one of the first things die Navy types told him when he came aboard. More the miracle that they were ready a bit ahead of schedule, if not on budget. He looked at his watch, 4:07, shrugged a light jacket on over his T-shirt, scratched his beard mightily with both hands, ran fingers quickly through his hair, then opened the door and stepped into the passage.
   He made his way towards the galley, his eyes feeding him the jumpy images of sleep deprivation. He joined the small queue at the urn, grabbed a cup, filled it with steaming black coffee, scalded his tongue, and carried the cup out, swearing to himself, alternately blowing on the coffee and trying to sip as he walked. He negotiated the steep stairs with one hand on the railing, then walked back on the main deck towards the stern. The chopper was already warming up on the pad, lit by spotlights, harsh grey and shadow, its rotors driving cold moist air down along the deck. Runyan shivered and clasped the neck of his jacket with his free hand. He spied Viktor Korolev in the small knot of scientific advisers and lifted the cup in salute. Damn Russian, he muttered to himself, doesn't he know what it means to run out of steam?
   Korolev met him with a smile, jacket open, oblivious to the prop wash.
   'Ho, Alex So today is our big day, eh?'
   'You look disgustingly chipper for someone who's about to seal the fate of the world,' Runyan grinned, 'particularly at this ungodly hour.'
   'Ungodly?' Korolev's smile faded a bit. 'Not at all, in fact the whole thing is now in God's hands, don't you think, and those of all these superb engineers we've worked with. Certainly not mine.'
   'You don't want your government to hear you invoking deities at this stage, do you?'
   'Maybe they won't arrest me for a little generic prayer, you think?' Korolev chuckled and slapped Runyan on the shoulder, causing him to slosh coffee on his hand.
   'Time to get on,' Korolev said, jerking his chin towards the helicopter where people were starting to clamber aboard.
   Runyan transferred the cup to his other hand, licked his fingers, dried them on his jeans, took a last, long swallow of coffee and then banded the cup to a young ensign.
   'Run this stolen property back to the galley for me, won't you?' he asked the young man and then jogged to the hatch of the helicopter as the rotors began to pick up speed.
   The last one in, Runyan sat near the small port. They lifted quickly and the Bradford rapidly disappeared beneath them, but as it did Runyan could see the faint lights of other ships come into view, scattered sparsely over the ocean as far as he could see in any direction. He did not bother to count them; he knew it was pointless since there were over a thousand, ranging from small craft like the Bradford to a handful of hulking carriers. He settled in for the familiar, minimally comfortable half-hour ride.
   They did not approach it on a direct line, probably because of other air traffic, Runyan mused, and he could begin to make it out when it was still some ten miles away — a floating behemoth extravagantly lit, a sparkling diamond, a cross section of L.A. from Mulholland Drive.
   They hovered nearby while another helicopter landed and took on a load of people. Runyan marvelled again at the structure below. It was patterned after an oil drilling rig, but was specially constructed in almost every detail. It spanned a hundred metres on a side and was covered with a complex superstructure dominated by the central dome, two and a half billion dollars of floating technology. The helicopter spun and settled towards the pad, a white circle surrounding a stark black letter K, the only hint of the prime contractor: Krone Industries.
   Runyan jumped out and walked off the pad, thankful for the firmness beneath his feet. The platform was anchored by a dozen telescoping floodable legs that extended deep down to the stable layers beneath the ocean swells which rocked the Bradford. It felt as solid as St Paul. Here was a place where a man could put on his pants in civilized fashion, thought Runyan, rubbing the bruise on his forehead. Behind him the helicopter filled with departing personnel and lifted off.
   Korolev assembled the small group of men.
   'Okay,' he said, 'you know your tasks. You are to oversee the last minute checks and then, most importantly, make sure every member of your crew gets off the platform. You all know your scheduled departure times?' He looked around the group, satisfied at their affirmative nods. 'Okay, I will see you back on the Bradford.'
   Runyan knew that he should go immediately to the computer room, but he was confident that his people would have everything under control, and he wanted a last look. As he made his way through the corridors, he noticed how empty they felt. The platform had hustled with a thousand souls for a year, but now was down to a skeleton crew. He stepped into the central dome. The wave of dial TO was stronger than ever, amplified by the tension of this last morning. The device which loomed in the centre of the room was more polished, but resounded with echoes of the machine Paul Krone had constructed which had brought them to this pass — a hedgehog array of gigantic lasers all focused into a central chamber where the hole would make its appearance in a little over two hours.
   Unlike Krone's original, this one was designed not to create and support, but to track and destroy. It was mounted on powerful hydraulic gimbals which allowed it to lift and settle, rotate and track. Each laser was individually aimed, controlled through an elaborate computer-driven feedback process. Although it weighed hundreds of tons and should have been ponderous, it was quick as a gun— fighter. Runyan watched in awe as the device was put through its final paces, leaping and slurring with blurring speed. In principle it could follow the hole even though the platform were buffeted by gale force winds. This day was carefully chosen, however, the weather monitored for weeks, and all the device needed to do was follow a simple parabolic trajectory. Runyan shook his head as one would at the imminent death of a magnificent animal.
   He left the dome and descended to the computer complex. He paused inside the door of the operations room and glanced through the window of the cubicle where the central computer stood. It was not much bigger than two men back-to-back, but was the state of the art parallel processing machine. In turn, it communicated with twenty— odd smaller dedicated machines scattered about the platform. Runyan made a silent tour of the room, pausing behind each of the half dozen operators at their terminals who made final crosschecks before turning the whole operation over to the central computer. Signals from special seismic and sonar monitoring stations throughout the world were fed by satellite relay, so the computer could register the location of the hole instant by instant. Any perturbation in the orbit was translated into a signal to the powerful turbines in the bowels of the platform. These could drive the platform at a maximum speed of ten knots and represented the coarse guidance adjustment. Peering at one terminal, Runyan saw that the turbines were engaged to combat a small drift due to ocean current. Another operator was checking the program that predicted the precise path of the hole as it rocketed up a reinforced shaft into the dome so the device there could anticipate how to move. Yet another tested the operation of the gravity detectors that would enable the lasers to focus their blast in the precise fashion to stimulate the hole to emit an even greater rocketing burst of energy. That release would reduce the mass of the hole and boost it, however minutely, further out of the earth, closer to the sanctuary of space.
   Everything looked in order, but Runyan felt a sickening knot in his stomach anyway. He and hundreds of others had worked very hard to determine the orbit of the hole. This site in the mid-Pacific had been selected with careful attention to the sub-mantle rock distribution to minimize any final perturbations to the hole's orbit. He was too close to this aspect of the project, though, and knew that despite all their care, this was the weak link. A small last second nudge, a drift in the orbit, one that was a bit too large for the huge turbines and the snake-fast device overhead to accommodate, and the whole gigantic enterprise could backfire, sending the hole deeper into the earth, beyond reach. Everything had seemed to function perfectly in half a dozen dry runs in which they had ambushed the hole, but allowed it to pass through their floating trap unmolested. This time they would pull the trigger. Their aim had to be true.
   Runyan watched quietly for several minutes and then announced, 'It's 5 o'clock. Our ride leaves in ten minutes. Let's button it up.'
   The operators glanced at him and then finished their tasks, logging out, turning their functions over to the computer and the remote monitors. One by one they sighed, pushed back from their terminals and left the room. The last one leaned over and gave his terminal a perfunctory kiss and a pat. Runyan smiled, clapped him on the shoulder in sympathy, and followed him out.
   They gathered by the pad and the helicopter dropped down out of the dark sky right on schedule. Runyan knew each of the men intimately, but went through the formality of checking each off on a list as they bearded the helicopter, attesting that they were safely off the platform. Then he climbed aboard himself and didn't look back.
   Back on the Bradford , Runyan stopped in the galley to choke down a doughnut and sip another cup of coffee. Then he lamed the gathering crowd on the deck, their backs to the rosy dawn, their eyes on that which they couldn't see, a hundred miles away across the flat ocean expanse. Runyan sought out Korolev. The Russian turned to face him, and they shook hands mutely, sombrely, and then leaned on the rail staring like all the others.
   After a while Korolev grumbled.
   'I saw a report the other day.'
   Runyan listened in silence.
   'Seismic activity along the trajectory,' the Russian continued.
   'Just statistical. Not a strong signal. But real, I think.'
   He took a sheet of note paper from his pocket and slowly and methodically tore it into strips, and the strips into bits.
   When he finished, he spoke again.
   'A definite increase in earthquake activity. No big quakes, but a larger number of small tremors. A weakening of the earth. The first small signs.'
   Runyan nodded.
   'Nervous?' he asked, gesturing at the scraps in the Russian's gnarled fist.
   'Yes,' Korolev smiled, 'but no, this is something else. A little trick your Mr Fermi taught us years ago. The Manhattan Project. If we see nothing, we have a dud. If it works,' he lifted his fistful of confetti, 'we have a little hint of how well.'
   At a pre-arranged time they put on dark goggles. All was silent on the Bradford. Runyan thought briefly of his wife. Then a new star was born.
   After the initial flash, Runyan whipped off his goggles. The fireball grew rapidly, expanding along the horizon, blasting upward. Outward it rushed, silently, painfully white, looming, violent, menacing. No, Runyan heard himself telling it, no, that's big enough. He had to crane his neck to see the top. No. No. It was impossibly big, and still, it spread, implacable, ravishing the sky. They were safe at a hundred miles, Runyan thought, they had to be. But in a detached way he could feel a primal force gathering in his belly, forcing a scream towards his throat.
   Then it paused, sated, halted its outward rush, and began to billow even taller.
   They watched quietly, all diminished by the horrifying splendour. After long minutes, Runyan could make out the shock ripping towards them at unbelievable speed across the surface of the water.
   'Hold on,' he heard Korolev mutter.
   The Russian grabbed the railing with his free hand. His lips moved as he counted to himself, watching the shock front and tracing its path. Then he threw the shards of paper in the air between himself and Runyan. The shock arrived with the roar of an express tram, and the bits of confetti leapt sideways. Korolev watched them continue their wafting fall to the deck.
   'It was a big one, Alex,' the Russian growled over the continuous rumble, 'a very big one. Pray the recoil was in the right direction.'