32 Iron
Pasadena · Thursday, 20 April 2034.
Delgado had his decaf at half past six in the Cassini mug, which somebody had given him in 1997 as a joke and which he had kept because it held the right amount.
The support area had been running all night on people who had nothing to do. The fleet had flown itself since twenty to seven yesterday morning, Pasadena time, when the last ground correction went up and every planner said it was accepted. Since then the only traffic up had been the kind nobody would act on. Lookout’s frames came down every few tens of seconds, each one about eight minutes old when it reached the wall, and the fleet’s telemetry came down with the same delay, so the room watched things that had already happened. He had told Dana once, a year and a half ago, that he’d be the guy who said go and then sat there for sixteen minutes. He hadn’t counted on there being nothing left to say go to.
He scrolled the planner log back, because it was there. Since February a column of re-plans had come in that no station had sent, and every vehicle had taken each one, acknowledged it, and thrown it away. The last was stamped 11:52 Wednesday, Pasadena. After that, nothing. Nobody upstairs had asked about the column, and he hadn’t put it in a report.
The open line from Geneva had been quiet for an hour, a copper hiss in his left ear and once the sound of a chair. At seven the side screen carried the council’s public board, and he watched the twelve boxes on it run out their clocks. At 07:06 they changed from predicted to reported, one after another down the list, in no particular order.
“Sixteen-oh-six,” Dana said.
Somebody at the back of the room turned the side screen off at the wall, and he let them.
Lookout was 50,000 km off the side, where he had put it for her four years ago, and Anvil was nine pixels on the main screen with a faint ring around it, then two, then three as the imaging lead stacked the last hour.
“Three, five, eight,” the imaging lead said. “Same as last week. The outer one’s thickest on the Earth side.”
“Show me the dead patch.”
She ran the glint history. Across the approach the fleet would come in on, the outer ring had an arc where nothing had glinted since March. Not empty. The sphere positions were there from older frames, every one holding station, every one dark.
“Mass,” the navigator said from two desks over. “It pulled the drives and left the bodies.”
“Or they’re off,” the imaging lead said. “Waiting.”
“Six weeks off?”
Delgado looked at the night face. The brush that had been 1,200 m of sunlit points in 2030 was a sparse line now, a few dozen, most of it gone out into the rings. Behind the inner ring, the hollow was a dark notch nobody had seen into since Tianxun.
“Dana. What’s a straight run look like?”
“Through all three, about one in five,” she said. “That’s before it moves anything.”
“And from outside you can’t see past the middle one,” the imaging lead said. “Whatever’s in there, we’ve got the edges of it and a guess.”
“The planners have the same guess.”
“The planners don’t have to like it.”
He nodded at nobody. They’d had them for weeks, and they’d already done that arithmetic more times than the room ever would.
At 08:28 the woman on telemetry said, “Wave one’s arriving,” and the board’s first column began to change.
At 5 km/s a vehicle went through all three layers in under 2 s. Whatever happened to it in there was settled before it arrived: by the line it had picked from thousands of kilometers out, and by whether something was sitting on that line when it got there.
Seventy vehicles, re-sorted in cruise from all four departure waves, in among some 750 decoys, arriving over the better part of an hour, close to straight in, because the planners had nothing yet to tell them otherwise. Four in each wave were the reserves. For the first minute it was only the decoy count ticking down a few at a time and the vehicles holding. Then vehicle rows went gray on the board, three, then two more, with nothing on Lookout before them.
“Launchers?” the navigator said.
“No flash.” The imaging lead had the frames up side by side. “No track. They’re just gone.”
“They hit spheres,” Delgado said. “It didn’t shoot them. They ran into the outer layer.”
Six more went gray in the next frame. He watched the dead arc, where they were going in thickest. Nothing in it moved.
The first launcher fired at 08:31. Lookout caught it as a short bright line off the body: a pebble, the small fast shot that had killed Tianxun. The decoy count dropped by one. A minute and a half later, another, and another decoy.
“It’s slow,” the imaging lead said.
“It’s choosing,” the navigator said.
It went on choosing. Over the next ten minutes the board took nine decoys out of the launchers’ shots and one vehicle, and the vehicles went on hitting spheres at four and five a frame.
“It’s shooting the warm ones,” Delgado said.
“Somebody taught it to spend on heat alone,” Dana said. “In a town in Ulster County.”
The decoy count went down by one.
At 08:40 Lookout’s frame went bright in the lower left of the outer ring, then again, two flashes a frame apart, and when it settled there was a hole in the glints where a few dozen spheres had been.
“Two warheads,” the woman on telemetry said. “Wave one’s carrying four. That’s two.”
“What’s left in the hole?”
“Nothing glinting. Some tumbling stuff further out.”
It began to fill within the hour. He watched it in the stacked frames, glints sliding in from both sides of the gap, slow, a few hundred meters each.
“It’s moving them,” the imaging lead said.
“Live ones,” the navigator said. “Not the dead ones. Look, the arc’s still dark.”
Wave one died in about forty minutes. One vehicle came out the far side of the layers and went on, and the board counted it through with a small white tick that nobody remarked on. The rest went gray, most of them on spheres, a few on pebbles, two in their own flashes. But the woman on telemetry had scrolled the last packets, and she said what they all saw.
“They talked the whole way down. Every one of them. Positions of everything they passed, which spheres moved, which didn’t. Wave two’s got all of it.”
“So it’s a scouting party,” the navigator said. “Seventy of them.”
“It’s what it cost,” Delgado said, and drank his decaf, which was cold.
Wave two reached the outer layer at 09:13 on the wall clock, and it didn’t come in the way wave one had.
The vehicles came at angles. The board showed them spreading, some going wide of the dead arc, a group going for the patch the two warheads had made, and the patch half-filled now. In the last minutes before each one went in, its track bent, a few hundred meters sideways, five and ten at a time, every vehicle picking its own hole through all three layers at once.
“They’re dodging,” the imaging lead said, as if she didn’t trust it.
For a few frames it worked. Then the decoy count stopped falling.
“It’s not shooting,” the navigator said.
“It is.” The imaging lead pointed. A bright line off the body, and a vehicle row went gray. “It quit on the coasting ones. It’s shooting things that burn.”
“The decoys don’t burn,” Delgado said.
“Now it knows that.”
And the spheres began to move. Not far. A glint in the middle layer shifted, in a stack of frames, by a few hundred meters, onto the new line one group had moved to, minutes before the group got there, and two vehicles went gray on the next frame.
“It’s watching them change course,” the navigator said. “It waits for them to commit and puts something in the way. It’s got minutes. They’ve got two seconds.”
“It’s heavy,” Delgado said. “It can’t move much. It moves early.”
Three frames later the board showed the vehicles changing course later, a minute out, then less, some leaving it so late the woman on telemetry said “Come on” under her breath. The spheres moved less. The losses didn’t stop.
A flash in the middle layer at 09:24, close against a glint that had just slid sideways. When it cleared the glints around it were mostly there.
“That one went off against the sphere it moved,” the imaging lead said. “Took that sphere and maybe a couple more.”
“For a warhead,” the navigator said.
The floor had stopped talking somewhere in the last ten minutes, and what was left was the woman on telemetry calling rows and Dana’s voice on the line, counting with him.
“Fifty-two,” she said.
“Fifty-two.”
“Fifty-five.”
“Fifty-six.”
At 09:40 the last of wave two went in. The board froze its wave-two column when the last track came out the far side.
“Mm,” he said, and read it again. Six had passed within a few kilometers of the body and nothing had touched it.
“It learned the decoys in one wave,” the navigator said.
“We learned the layers in one,” the imaging lead said. “Took us sixty-one.”
“Took it nothing,” the navigator said. “It hasn’t lost anything it can’t move back.”
“It lost the patch,” the imaging lead said.
“It filled the patch.”
“With spheres it took from somewhere else. Count the middle layer on the far side. It’s thinner than it was at eight.”
The navigator pulled up the far side and counted. Delgado kept out of it, because they might both be right, and wave three’s planners had already decided either way. Eight minutes ago, out there, they had already gone in.
Wave three came in at 09:58 Pasadena, and on the board its tracks did not point at the body.
It took him two frames to see it. The vehicles changed course late, the way wave two had, but the lines they had picked from thousands of kilometers out didn’t end at the nine pixels. They ended at the night face, where the launcher lines had come from and what was left of the brush hung inside the inner ring.
“They’re going for the guns,” the navigator said.
“The launchers,” Delgado said. “And the brush.”
“Same thing, if the brush is where it makes more.”
The first hit came at 10:04. A flash low on the night face, and when it cleared the brush there came apart in a cloud of glints, dozens of them tumbling, catching sunlight frame by frame at no rhythm at all. A second flash, further along, and another cloud.
“That’s spheres,” the imaging lead said. “Unfinished, or stored, or whatever they were. They’re spinning.”
The launchers kept firing into wave three, and vehicles kept going gray. But the woman on telemetry had started timing the bright lines, and she said it before anyone else saw it.
“They’re slower.”
“How much?”
“Was about a shot a minute and a half. Now it’s three. Four.”
“It’s saving them,” the navigator said. “For wave four.”
“With wave three on top of it?” the imaging lead said. “It’s out of launchers.”
“Some of them,” Dana said.
Another flash on the night face. The next bright line came six minutes after the last, and went into a vehicle, and the vehicle went gray. Slow wasn’t the same as missing.
At 10:16 one of wave three’s reserves went gray halfway through its braking burn, forty thousand kilometers short of the layers. T3-044: telemetry lost during braking, presumed destroyed. Two of the other three had already gone to pebbles while they braked; the last went a few minutes later. The column took forty-nine more before it was done.
At 10:40 the board showed wave four forming up beyond the outer layer. Seventy vehicles, fewer decoys than any wave before, and most of what was left of the warheads. Dana’s breathing on the line was the only sound in his left ear. Somebody had brought in a box of something from the place on Foothill, and it sat on the console unopened.
At 10:48 wave four went in.
It came the way wave three had, late changes of course, through gaps that were wider now, past spheres that moved less and less. The launchers fired twice in five minutes. The warheads went through the layers in a bunch, two seconds each, and the woman on telemetry counted the ones still reporting on the other side.
“Twelve through. Fifteen. Seventeen inside the layers.”
“Seventeen,” Dana said.
The first one went at 10:53 on the wall clock, close over the hollow. Lookout’s frame went white in a disc and came back with the edges burned out, and on the board, in the same second, twelve warhead rows went red.
“What happened?” the navigator said. “What happened to them?”
“Fratricide,” the imaging lead said, and then, less sure, “or it saw them.” The rows sat red, all twelve stamped with the same second.
“Five,” the woman on telemetry said. “Five still green.”
The next frame was white. So was the one after it. He watched it saturate frame after frame, the whole sensor full, the imaging lead pulling down exposures that didn’t help. The woman on telemetry said “Four,” then “Two,” then nothing. The five rows hadn’t gone red. They had gone white, one after another, close over the hollow: all five had gone off where they were sent.
He sat with his hands in his lap. In 2030 he had gone through Lookout’s software with a green pen and struck out everything that let it decide anything for itself, and Dana had watched him do it. Four years later he had built hundreds of machines that decided everything, sent them out, and broken his own room so that nothing on Earth could help them. He had told himself it was the same rule: nothing he couldn’t see should be allowed to choose. He didn’t know anymore which side of it he was on. The next frame was white. He waited for the one after.
It was nearly eleven before the frames gave anything back. A dark shape in a field of scattered light, then a shape with edges.
The imaging lead waited out two more frames. Then she started reading it off, slowly, like a calibration log.
“Hollow’s gone. There’s no notch. That whole end is open. The brush is scattered, dark, nothing glinting where it was. No launcher lines since the flash.” She enlarged it. “The horn’s broken. Look at the tip. There’s a piece of it off to the side, separate.”
“Layers,” Delgado said.
She stacked ten frames. The three rings were still there, but wider, softer, glints that had held station for months now drifting outward, no longer keeping their gaps.
“They’re not holding,” she said. “Nothing’s holding them.”
The board finished its count while they looked. Of the 281 that had arrived, thirty-one had come out the far side and were going on out past L5, small white ticks at the bottom of each column. Nobody said the number out loud.
At 11:31 the phone on his desk rang. It was Green Bank.
“The carrier’s gone,” the voice said. “The 31.7. Last good sample 18:21:40 UTC. After that there’s nothing in the band. We’ve got it on both receivers.”
“Not faded?”
“Gone. It doesn’t taper. It’s there and then it isn’t.”
“Keep looking,” Delgado said.
“We will.”
He put the phone down. On the line, Dana didn’t say anything, and he didn’t ask her to.
By half past twelve the imaging lead had the thermal channel up beside the visible. The face that had taken the blasts was a bright crescent, glowing, and the next frame it was less bright, and the frame after that less again. The old warm face, the one that had run hot since 2028, was already falling toward the rest of the body.
Nobody on the floor clapped. The woman on telemetry pushed her chair back from the console. The navigator closed the box from Foothill without taking anything.
On the main screen, 50,000 km away and eight minutes ago, two kilometers of iron turned slowly in the sun, nine pixels long, cooling on every side at once.