"We mate the orbiter to the top of the booster. After that the barge will dock with the airstrip. Your launch window opens at half-past eight, lasting six minutes."

The payload bay doors hinged shut, bringing Greg one step closer to Zanthus. And it still didn't seem real.

From Oscot's deck the western horizon was a pastel-pink wash flecked with gold; the east a gash into infinity, not black, but dark, insubstantial, defying resolution, a chasm you could fall down for ever. Greg watched the crescent of darkness expanding as the Atlantic rolled deeper into the penumbra; occlusion slipping over the sky, giving birth to the stars. There was no air movement at all, dusk bringing its own brand of Stasis. The world holding its breath as it slid across the gap between its two states.

Greg was wearing a baggy coverall over his new flightsuit. The coppery-coloured garment fitted him perfectly, a one-piece of some glossy silk-smooth fabric, knees and elbows heavily padded. It had a multitude of pockets, all with Velcro tags; small gear modules adhered to Velcro strips on his chest—atmosphere pressure/composition sensor, medical monitor, Geiger counter, communicator set. He'd even been given a new company cybofax, capable of interfacing with Zanthus's 'ware, which was in the big pocket at the side of his leg. There was also a lightweight helmet, which he felt too self-conscious to put on before getting into the Sanger.

The first real stirrings of excitement rose as he led the security team towards the waiting tilt-fan at the prow, the realisation that he was actually going into space finally gripping. Oscot's deck was a bustle of tautly controlled activity. The ever-present grumble of the thermal generators' coolant water was being complemented by the lighter braying of mobile service units. Five Lockheed YC-55 Prowlers were already on the deck. They were ex-Canadian Air Force stealth troop/cargo transports. Their shape was a cousin of the original B2 bomber, a stumpy, swept bat-wing, with an ellipsoid lifting-body fuselage; the entire surface had a radar-nullifying matt-black coating. There were no roundels, not even serial numbers. True smugglers' craft. Greg watched as the sixth rose silently up out of its daytime sanctuary, an old oil tank converted into a split-level hangar. The big elevator platform halted at deck level with dull metallic clangs which rumbled away into the gloaming. The stealth transporters seemed to draw a thick veil of cloying shadow around themselves, eerily other-worldly.

Sean Francis caught Greg staring. "Neat machines. Yes?"

"I didn't know you still used them," Greg said.

"Sure. Their avionics are a bit outdated now, but they're more than adequate to infiltrate Scottish airspace. That's our main target, their PSP is pretty shaky right now. It'll only take a small push and they'll fall."

Greg watched large pallets of domestic gear systems being loaded through the Prowlers' rear cargo doors. "You build all that stuff here?"