The arrival in Ganymede orbit of the seven ships from Earth was a big moment for the Jupiter Four veterans, especially those whose tour of duty was approaching an end and who could now look forward to going home soon. In the weeks to come, as the complex program of maneuvering supplies and equipment between the ships and the surface installations unfolded, the scene above Ganymede would become as chaotic as that above Luna had been during departure preparations. The two command ships would remain standing off ten miles apart for the next two months. Then Jupiter Four, accompanied by two of the recently arrived freighters, would move out to take up station over Callisto and begin expanding the pilot base already set up there. Jupiter Five would remain at Ganymede until joined by Saturn Two, which was at that time undergoing final countdown for Lunar lift-out and due to arrive in five months. After rendezvous above Ganymede, one of the two ships (exactly which was yet to be decided) would set course for the ringed planet, on the farthest large-scale manned probe yet attempted.

The long-haul sailing days of Jupiter Four were over. Too slow by the standards of the latest designs, it would probably be stripped down to become a permanent orbiting base over Callisto. After a few years it would suffer the ignoble end of being dismantled and cannibalized for surface constructions.

With all the hustle and traffic congestion that erupted in the skies over Ganymede, it was three days before the time came for the group of UNSA scientists to be ferried to the surface. After months of getting used to the pattern of life and the company aboard the ship, Hunt felt a twinge of nostalgia as he packed his belongings in his cabin and stood in line waiting to board the Vega moored alongside in the cavernous midships docking bay. It was probably the last he would see of the inside of this immense city of metal alloys; when he returned to Earth, it would be aboard one of the small, fast cruisers ferried out with the mission.

An hour later Jupiter Five, festooned in a web of astronautic engineering, was shrinking rapidly on the cabin display in the Vega. Then the picture changed suddenly and the sinister frosty countenance of Ganymede came swelling up toward them.

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