One of the Argus Station’s massive steering thrusters jutted up between him and his destination. It was a thing the size and shape of a railway carriage, but tilted at forty-five degrees on a turntable fifty metres wide. When he had first studied this station down on Earth, these things had resided at the ends of twenty-metre-tall structures constructed of reinforced girders, which projected outwards from the station rim. Now, by contrast, this particular thruster lay only a few metres from the surface, the rim itself having been extended out nearly far enough to encompass it. As he gazed at this object, Saul detected movement and swung his attention back to Earth, where the swarm of space planes was rising into view.

He quickly headed into the hard shadow of the thruster, and almost at once found the maintenance hatch he was looking for. Though he needed primarily to get to the docks, approaching them across the rim itself would have been foolish, since the troops entrenched there would be on the lookout for a flanking move by Langstrom’s men, and would be sure to spot him. Besides, even though most of the laser satellites nearby were disabled, Smith still controlled a few usable laser satellites within range, and might spot him too.

The maintenance hatch was not designed to be opened by human hands, but a simple instruction called one of the robots over, which inserted an outsize Allen key to disengage the locking mechanism. A slight puff of vapour blew out as the hatch hinged open, but that probably wasn’t station atmosphere but the result of fuel spillage. Summoning his five robots to follow him, Saul dropped inside and found himself in a narrow space alongside the huge stepper motor used for driving the turntable mechanism, powering a great cog above him which engaged with a massive toothed ring.

Skirting around this motor he found a tunnel leading to the distant space dock. Built to accommodate robots, it was also lined with fuel pipes from the silos there. As the last robot closed the hatch behind it, the lights went out, but he had two of the robots light up their fault-inspection lasers, and damp coherence, to illuminate his surroundings in lurid red. Ten minutes of propelling himself along the tunnel brought him to a point where many of the pipes diverged upwards to connect with the various silos located along the base of the docks above. However, other pipes ran ten metres further in, before curving upwards into the nearest docking pillar, there to connect to the pumps used to fuel space planes engaged in orbital duties.