by Jeff Carlson
She closed her ‚ngers on the hard, wire pin of the grenade as the choppers ripped into the sky, sunlight †ashing from metal and Plexiglas.
There was no way to keep the vaccine itself from them. Even if she and Cam and Newcombe set a hundred cars on ‚re, consuming themselves, the microscopic nanotech could still be harvested from their remains, and the human race had been pushed too close to the brink to destroy the vaccine outright. It was better to let Leadville have it than no one, but that was a dangerous idea. It felt like failure.
Ruth stared at the roaring aircraft and let her hatred and bitterness ‚ll her. In that instant, she knew she could do it. She tensed her hand on the arming pin.
“Down!” Cam hit her bad shoulder and Ruth fell, gasping. She was vaguely aware of Newcombe behind him. The other man had hidden against a red commuter car and then Cam blinded her, throwing his body over her head and chest.
She fought him, trying to get to her pack again. He didn’t understand and kept shouting, “Down, stay dow—”
Above them, the deafening thunder veered away. The change was abrupt and distinct. At the same time, a blast wave of twitchy black muck spattered across her bare face and goggles. Ants. Shredded ants.
Ruth bent back from it and screamed, trapped between the road and Cam’s weight. Then he swiped at the black rain with his entire upper body and she was free.
A huge spout of insects jetted into the sky. They were carpenter ants, well out of their normal reproductive cycle. Maybe they were always breeding now. The nests and passageways of their colony extended ‚fty yards in every direction beyond the berm of the highway and the ground there had exploded with thousands of winged males and immature queens, although Ruth saw only the aftereffect of the swarm’s collision with the helicopters. The billowing hole immediately ‚lled in again, a cloud of small bodies ready for war.
They were protecting the food that Newcombe had left out. The truck formed a crumpled wall near the center of the storm, fortunately. It de†ected most of the †ying ants as well as the warriors and worker drones that boiled across the earth. Backwash from the helicopters had dragged the upper layers away, too — and on the far side, the bugs also found competition.
Fourteen months ago, in the space of a few weeks, the ants’ food supply had skyrocketed and then dropped off again and the tiny scavengers had evolved to meet the change, ravaging every opportunity, surviving by aggression alone. The Leadville troops would have only a residue of human scent on their containment suits, but they were new. They were moving. And they were nearly on top of the colony.
Dark threads swirled together in the air and lashed down out of Ruth’s sight, twisting up and back in the cyclone winds. Both helicopters had swung away but one went low as the other climbed, its engines straining, clogged with ants. In some brief gap in the noise Ruth heard the rattle of submachine guns on full auto, the soldiers ‚ghting back any way they could.
Then she recoiled, her cheek and neck burning with half a dozen bites. “Aaaaa—”
The wet blast of ants that painted her were not all dead. Not by far. Many had been chewed apart by the rotors and many more were stunned, some of them stuck in the moisture of their own pulverized companions, but some were still free, and confused and enraged.
Ruth fell to the ground, clubbing at her face and neck. One thought stayed with her. My pack. She looked for it as she tottered back onto her knees and Cam was there, stumbling through the junk of his own upturned pack. He had a handful of little glass bottles. He fumbled off the caps and made a pitching motion at her. Perfume. Sweet. It scalded her nostrils and Ruth clutched at her face mask, roughly dragging the fabric up to dislodge any ants still on her cheeks.
“Where—” she said, but he caught her arm, shaking the rest of the bottles out over their heads.
Newcombe joined them, bumping hard. He had a squeeze bottle of insect repellant and punched it against her, crushing ants, spraying juice. It was like breathing turpentine.
“I don’t think they’ve seen us!” Newcombe yelled.
But the drumbeat of the choppers changed again, coming back.
“Run for the culvert!” Cam shouted at her.
“Where’s my pack?”
“No, stay down!” Newcombe yelled. “If they see—”
“I have more trap food! There!” Cam yanked at Ruth even as he knelt, propelling her toward the Mercedes and her backpack. “If we stay here we’ll die!” he shouted.
He was right. The sun was fading as the bugs thickened. In the shifting new pitch of sound, Ruth understood that one of the chopper pilots must be using his aircraft like a powerful fan, blowing the swarm off of the ground troops.
Off of them and onto us.
“Go! Run!” Cam hollered, jamming a knife into a can of milk. But she hesitated.
He threw the dripping can as hard as he could and bent to stab at another, ignoring the haze of ants on his gloves and knees. He was like that, quick to make the best decision. Cam Najarro was neither a soldier nor a scientist, but he had lived through the entire plague year on a barren, isolated peak where eighty people were ultimately reduced to six by starvation and cold and bugs and madness, and that was an education of a kind that few could match.
He was a good man, though profoundly wounded — and maybe not entirely sane, Ruth sometimes worried. He was so single-minded. He had committed himself to her even before she suggested that advances in nanotech might someday rebuild his damaged body, taking on every role available to him. Scout. Bodyguard. Friend. It was wrong that he should stay while she escaped. Wrong to waste his effort.
Go, she told herself, hefting her pack. The two men were puncturing every last jar and can and they’d ‚nish in seconds. They’d be right behind her.
Ruth jogged into the maze of cars and skeletons, trying to keep her head down. The choppers hadn’t moved and she angled away from the noise as much as possible, staggering once when her boot caught in a drift of bones. Then she ricocheted off a brown minivan and hunkered down, coughing, sick with exhaustion. Her face and mouth throbbed but she was mostly free of ants. She rose just enough to peer through the dusty windows of a sedan, trying to spot the enemy.
Some of the soldiers had fallen in the low, living fog. They staggered up, but somehow one man’s suit had ripped. Maybe he’d caught it on the fence. Ruth thought his rubberized sleeve was †apping at the elbow, although it was impossible to tell in the leaping black mass of ants.
His ragged arm swung up like a †ag, trailing a dark mist of blood and insects. The bugs were inside him. His shape barely looked human anymore, knotting and jerking as he was eaten alive. Two of the other soldiers tried to lift him away but a third soldier rammed himself into the bleeding man and knocked him down, pointing his submachine gun at the man’s chest.
No, Ruth thought. The realization left her stunned. No, he’s aiming at his friend’s arm.
The weapon blazed, amputating the furious buldge of ants but leaving the man’s body wide open to more. Ruth couldn’t watch. She jerked her eyes away, looking for Cam and Newcombe. But there was another horror behind her. New eruptions had come up out of the earth and covered the road like smoke. There was also a reddish streak pushing in from the northeast, beetles or something else. At the same time, another phenomenon stirred through the haze of ants. The machine plague. Even the bugs were not immune, as Ruth had long suspected. In their frenzy, the ants were generating too much heat despite the cool May afternoon — and within the cloud, holes burst open like ‚reworks as the ants disintegrated.
Ruth stared in mute awe. Then her heart leapt as a human form sprinted between two cars nearby. Cam. He ran with an odd limping motion, swatting at his collar and hood. Newcombe appeared close behind. Ruth waved frantically even as she cut her eyes back to the enemy, trying to see the wounded soldier again.
One glimpse convinced her. Newcombe was right. Leadville had almost certainly detected some trace of her group, but as the helicopters †ew in, the
larger heat signature of the ant colony had deceived them. Now they were done. It was a spectacular mess. Dense spirals of ants whipped through downdrafts and currents as the last men on the ground †ed, hauling the bloodied soldier aboard a crowded †ight deck. He was limp now, dead or unconscious, but the writhing shadow of ants remained attached to him even after his friends kicked and slapped at his body.
The other chopper was already lifting away and Ruth allowed herself a small, savage smile.
It looked like her luck was holding.
2
The water gleamed in the sunrise, white and treacherous. “Stop,” Cam said, even as he took several more steps himself— but now he moved sideways instead of forward, feeling wary and restless.
There was no wind this morning and the valley below them held a †at inland sea, dazzling in the light. The highway disappeared into it, although he saw the road hump up again brie†y about two miles off. The water wasn’t deep. It was rotting and stagnant, cluttered with buildings and power lines and cars. Spiderwebs. Small patches of silk clung to the ruins by the thousands.
“Where are we?” Ruth asked behind him, and Cam said, “Stop. Stay there.” Then he realized his voice was too harsh and he shook his head. “Sorry.”
“You’ve been here before,” she said, her eyes searching for his through their dirty goggles.
“Yeah.”
He knew she’d lived in Ohio and Florida, and Newcombe said he grew up in Delaware, but there was little question that Cam’s parents and brothers lay dead somewhere on these same roads. Maybe they’d even made it this far. Northern California had once rivaled Los Angeles for bad traf‚c, however, because the greater Bay Area sat in a massive delta crammed with rivers and gullies, which meant bridges, levees, and bottlenecks.
He was not as sad as she probably thought. The land down here was too strange and dangerous to be home. More than anything, Cam felt frustrated, trying to grasp the scale of what they were facing.
Their goal looked close enough. They wanted to spread the vaccine to other survivors, and the Sierras made an imposing band across the horizon — brown foothills, dark mountains — like a wall of pyramids with the highest peaks still capped in snow. In another life he’d driven there in three hours. But those memories were deceptive. As the land rose, it buckled, and walking all the way there would have been an up-and-down nightmare even without the traf‚c and other wreckage.
The city in front of them was Citrus Heights, one of the nicer suburbs that made up the dense urban sprawl all around Sacramento. It had burned before it drowned. Despite the name, most of the Heights sat on the same low plain as its neighbors. This quiet marsh must have seen a torrent of water when it ‚rst went under, judging from the debris wedged against the slumping homes and telephone poles as high as three feet up. There were mud banks among the overturned cars and snarls of brush and charred lumber, all of it softened by the glimmering white silk of webs and egg sacs. The water kept the spiders safe from the ants.
“Let’s check your map again,” Cam said, but Newcombe had the same idea. Newcombe was unbuttoning a pouch on his jacket as he strode closer.
Cam looked back at the glinting sea. They had been lucky not to run into other new basins and swamps before now. Hundreds of miles of earthworks spread across northern California, channeling the †ow down from the mountains. Two winters with no one at the gates had been too much. Everywhere they’d seen plant life sick or destroyed entirely — and without grass and reeds, the levees were vulnerable.
“What do you think,” Cam said. “North, right?”
“We have to go north anyway.” Newcombe crouched easily and set his map on the asphalt, moving his glove to the hooked line of pen marks he’d drawn.
Cam bent more slowly, careful of his right knee. Ruth settled down with a thump. She was clearly desperate to rest, but so awkward with her cast. He saw her raise her good hand to her face mask to scratch her bites.
“I don’t like it,” he said. “Look.” East of the city, the American River had been dammed on two sides to form a giant, square-cornered lake. Some part of that huge berm must have given way. Cam covered a section of the map with his glove and said, “If this whole valley is †ooded, we’ll actually need to go west to work around it. That could take forever.”
“North was our direction,” Newcombe said.
“Cam knows the area,” Ruth said, and he was glad.
It was childish, but he was glad. He said, “We don’t want to be down here any longer than we have to.”
“We stay north,” Newcombe said, drawing his ‚nger south across one short inch of map. “The other guys must be around here, maybe a little farther. It’s just not smart to bunch up and make it any easier to ‚nd us.”
Cam only nodded, sifting through his doubt.
There had been two more people with them in downtown Sacramento, Captain Young and Todd Brayton, another scientist like Ruth. The division was obvious. It meant a better chance that someone would reach elevation with the vaccine, so they had angled away from each other as quickly as possible. But they faced another problem. By the second day, Newcombe became certain that Leadville had established a forward base in the Sierras, probably straight east of Sacramento. There was no other way they could mount so many helicopter searches. The range from Colorado was too far.
Avoiding that base meant a detour either farther north or back south again, and Cam didn’t think Ruth had the extra miles in her. Maybe not him, either. Newcombe didn’t see that. Newcombe was too strong, whereas Cam knew very well how an injury could change and limit everything about a person. Mood. Imagination.
He admired her. She was tougher than anyone would have guessed, but the truth was that the two of them were a ragtag disaster, Cam with body-wide damage from old nano infections and his left hand thickly bandaged after a knife wound sustained during the ‚ght in Sacramento, Ruth with her busted arm — and until just sixteen days ago, she had been the centerpiece of a crash nanotech program aboard the International Space Station for over a year, losing bone and muscle mass despite a special diet, vitamins, and exercise.
She tired easily, which had been holding them back. They were still barely twelve miles from where they’d started, although they must have covered twenty or more. Their path had been a back-and-forth zigzag through the jammed streets and bugs and other hazards. Cam estimated their total hike to be a matter of weeks, not days.
It should get better. In theory, Leadville’s search grids would grow too big and they could spend less time hiding. Ruth pushed herself mercilessly. She knew she was the weak link. And yet if she dropped from exhaustion or developed a fever or something, Cam honestly didn’t think they could carry her. He shared her impatience, but it was important for her to get the rest she needed, no matter if that increased other dangers. Newcombe only encouraged her, though, with all the best reasons in mind, and Ruth was too driven to say no. It had to be Cam who protected her.
“What if we ‚nd a boat,” he said. “A motorboat. Every other guy around here was a ‚sherman or something. We could cut straight across or even go upriver.”
“Mm.” Newcombe turned and Cam followed his gaze to the submerged homes and wreckage.
“We have to try,” Cam said, rising to his feet. His back hurt and he had ant bites down his neck and shoulders, a pinched nerve in his hand, but he bent to help Ruth anyway.
* * * *
They fell into a familiar rhythm, Cam in front, single ‚le with Ruth between him and Newcombe. They went south, drifting back the way they’d come but off the highway.
The new shore was ‚ckle. In places the water stretched inland, ‚lling the streets — and everywhere the houses and fences were a problem. They wanted to look into yards and garages, but each neighborhood was its own trap, either dead-ending in the water or choked with debris from the larger †ood or both. Several times Cam dodged around ‚elds of spiderwebs. Once he saw ants. Everything took time. They needed food and cautious
ly entered a house that looked normal except for the dry band of muck wrapped around its foundation. They wanted to siphon gas into a few extra canteens and Ruth immediately sat down as Newcombe stopped beside a small Honda, shrugging out of his pack.
“You okay?” he asked.
Ruth bobbed her head, but Cam wondered what she looked like behind her goggles and mask. Her twisted posture wasn’t right.
“I haven’t seen any reptiles,” she said. Typical Ruth. Sometimes it was hard to know what she was thinking, only that she’d de‚nitely latched on to something.
“Me either,” Cam said.
“But you did in the mountains,” Ruth said.
“Yes. Not at the top, but we saw way too many snakes and whole ‚elds full of lizards at eight thousand feet. Seven. Six.” That was as far down as he’d gone. “They were de‚nitely below the barrier.”
“Maybe the ants are attacking their eggs,” she said. “Or their hatchlings. The bugs might be getting to their young before they’re big enough to ‚ght.”
“I can’t ‚gure out why there’s anything alive down here at all,” Newcombe said.
“They don’t get as hot as people,” Cam said.
“But they do,” Ruth said. “Sometimes hotter. Cold-blooded things aren’t actually cold. They just don’t generate their own body heat, except from running or †ying. Basking in the sun. They can be very precise. I think most reptiles keep themselves between seventy and eighty degrees, but insects are usually about the same temperature as the environment.”
Cam nodded slowly. The machine plague operated on a heat engine. When it hit ninety degrees, it activated. And yet in his experience, the plague took as long as two or three hours to power up after it was absorbed into a host. At midday, in summer, the nanotech might begin to decimate the bugs — but as the day cooled, so would these creatures. Obviously enough of them had survived, and they would breed uncontested in autumn, winter, and spring.
Fish and amphibians were safe in rivers and lakes. He’d seen it himself. They remained below the critical threshold, and at altitude it was the same. Lower temperatures protected the reptiles and insects in the foothills and mountains. They must have continually repopulated the world below in haphazard migrations.