Arach, Celedon remembered, had expressed a degree of boredom before shutting itself down. Not unsurprising considering its antecedents.

Celedon returned its attention to the package received. The U-space coordinates were correct and the runcible signature correct. The AI opened the package and quickly scanned the information it contained, then, realizing the seriousness of the situation, it diverted a full third of its capacity to studying the data more closely, before sending a copy, via Runcible D, to Earth Central—the Polity’s ruling artificial intelligence.

‘Hostile contact protocol Starfire,’ the distant Earth Central AI replied.

Celedon immediately contacted its drones in the three shutdown runcible lounges: the spider itself, the fly, and the pill bug — all erstwhile products of that ancient war effort. ‘Runcibles coming back online. Open all lounges and direct all humans to the runcibles, immediately. You may use non-fatal coercion. Fly, your area is to remain zero-G. Stand by.’

The AI observed lights coming on in the various empty lounges, doors opening, and the nascent shimmer of Skaidon warps growing between the bull’s horns of Runcibles A, B and C. In lounges B and C, Celedon turned the gravplates back on, bringing various objects clattering to the floor. At the same time it put up on all bulletin boards, EVACUATE STATION, ALL INCOMING TRAFFIC IS ON DIVERT, and sent the same message to all personal coms and augmentations, or by voice in private quarters.

‘The sender chose this station for a reason,’ Celedon observed.

‘Certainly,’ EC replied. ‘It is the least visited and the most uninhabited.’

Inevitably, the station’s residents sent thousands of queries. The most hysterical were from the outlinkers who had made this place their home for a hundred years, for, being zero-G adapted humans, where they might be evacuated to could be a problem. The transient travellers, however, were soon packing their luggage, if not obethently heading towards the runcibles. Celedon itself noted a group of three tourists, who had been exploring a deserted part of the station, now being shepherded towards Runcible C by Arach, the spider-drone. Though they objected loudly, they were moving fast, especially after Arach informed them what non-fatal coercion could mean, and began lasering the carpet right behind them.

‘Least collateral damage by feedback from a time-inconsistent runcible connection?’ Celedon suggested. A runcible connection between the past and the future was considered impossible by many humans. The AIs new better.

‘Precisely,’ Earth Central replied.

‘So you wish me to fully connect?’

‘Yes, but only to Runcible A, and not until you are positioned in low solar orbit with all preparations made that the protocol implies.’

‘Of course.’

The AI maintained its link with Earth Central while making those preparations. Internal scans showed that the original station structure remained as sound as ever. However, expanding that scanning process, the AI found that many of the additions accumulated over the years were not designed to withstand what must ensue. Celedon recorded, formatted and loaded 200 subminds to 200 skeletal Golem and assigned them to expediting the evacuation of those additional structures, making the ones constructed over the rim fusion engines a priority, and then observed the skinless androids, like chromed skeletons, come marching out of storage. It assigned system subminds already initiated to fielding the queries and protests from established residents and companies, then turned its own attention to the outlinkers.

‘Chief Engineer Draesil,’ it said, watching the man through the multiple eyes of a welding robot.

The man was tall, painfully thin, his skin coloured and patterned like the flesh of a kiwi fruit. His hair was black and he wore a tight body garment covered in pockets and strapped-down tools. In this zero-G environment he hung with one arm hooked through a wall loop, peering about himself at the activity of his multicoloured kind.

‘What the hell is going on?’ he asked, his gaze focusing on the nearby robot.

‘Your people must evacuate the station as quickly as possible.’

‘Yes, I think I kind of understood that, but why? Buffer failure or fusion breach?’

‘Neither. This station will be undergoing fusion acceleration burn in fifty-three hours. Though many of those aboard would be able to survive the forces involved, your own kind would not.’ Outlinkers, being adapted to low gravity, were fragile.

‘You still haven’t told me why,’ Draesil snapped.

The AI felt a moment of chagrin. It had noted over its long years of stewardship of this station how humans readily trusted AIs until orders from such entities impinged directly on their lives. Then they started voicing questions and doubts about the abilities and motives of intelligences a thousand times more powerful than any unaugmented human. Thus, in moments of catastrophe, when hard decisions needed to be made quickly, all AIs included in their calculations a human death toll governed by a factor called ‘pigheadedness’.

‘A hostile contact protocol has been ordered by Earth Central. You and your people must all proceed immediately to Runcible Gate A, which will remain a zero-G area, with whatever belongings and personal effects you can carry. All resulting pecuniary losses will be reimbursed.’

Draesil bowed his head. ‘What’s coming through?’

‘I cannot discuss that.’

‘And where are we going?’

‘You will be transmitted to another station’s low-G section. Should it be possible after this crisis, you may return here to me. Otherwise alternative station space will be provided.’

Draesil nodded and pushed himself away from the wall, speaking into his collar comlink as he tumbled freely through the air. ‘This is the real thing, people. We have fifty hours to get out of here. Grab your stuff and head for Runcible A.’

Celedon then turned its attention to other matters, glad that at least the humans in this small section of the station had become someone else’s headache. Seven hundred and thirty people had already gone through the runcibles. The lounges of D and E were becoming very crowded, but now the spider and the pill bug arrived and began directing people to the monorails which would take them around the station’s main disc to the other runcibles opening up. The alacrity with which the crowd obeyed those drones, Celedon put down to atavistic fears: few humans would be inclined to disobey the orders of an iron spider with a leg-span of three yards.

Now, the engines. The main fusion engine lay along the axis of the station, protruding into space below it, so was free to fire up at any time, but Celedon needed to utilize the rim engines now. It observed one area, positioned over one of those four engines, now clear of human occupants, and Golem in the process of leaving too. Celedon began closing the airlocks, but then, after noting something through its cameras, reopened a lock and sent one of the Golem back inside. It shortly returned carrying a large fat cat under its arm, which it handed to a distraught woman who came running back to collect it. Celedon emitted a silicon sigh and closed the final airlock.

The rim engines were of an old design fuelled by deuterium and tritium microspheres. Their tanks were full of liquid deuterium and tritium talc, and had been so for a hundred years. Diagnostics detected no faults, therefore this particular engine stood ready to ignite, but not yet. The Celedon station possessed a slight spin, not for centrifugal gravity, that problem having been overcome long ago with gravplates, but to fling away any docked spacecraft—though the last one of those had departed thirteen years ago. Checking with an astrogation program, the controlling AI, Celedon, waited the required twenty-two minutes and seven seconds.