outer moons. They’d just passed the orbit of Leda, a tiny chunk of rock and ice lost in all that night.
Sergeant Major Kaminski was standing by the screen, a squeeze bottle of coffee in his hand. “Major, sir,” he said, nodding. “How went the meeting?”
“As expected, Sergeant Major,” he replied. “We’re to be squared away by sixteen-thirty hours, with inspection at seventeen hundred. Spin-down, turnover, and deceleration are scheduled to begin at twenty-twenty hours. We’ll want to make sure everyone’s had chow and the mess gear’s cleared and stowed before then.”
“Aye, aye, sir. We’ll be four-oh, never fear.”
“Good.” He stared a moment at the vid screen. “Which one’s Europa? You know?”
Kaminski indicated the middle star of the three on the right. “That brightest one, sir.” His finger moved to the moon nearest Jupiter. “This little red one’s Io. You can almost smell the sulfur volcanoes from here.” He indicated the lone moon to the left. “That’s Ganymede. Biggest moon in the Solar System, bigger even than Mercury, and the next out from Europa.” His finger slid back to the right. “And Callisto. Outermost of the Galilean satellites, and enough like our Moon back home to make us all nostalgic for cold beer and a hot date.”
“I didn’t ask for a travelogue, Sergeant Major.”
“No, sir. Of course not. Sir.”
Oh, stop being a prick, he told himself savagely. “Sorry, Kaminski. I guess I’m a little on edge.”
“Goes with the territory, sir.”
Damn. Kaminski was always so diplomatic. Always knew exactly what to say. Well, that went with the territory too. Frank Kaminski had been in a long time…almost thirty years. He’d been in during the UN War, a veteran of Garroway’s March, of Tsiolkovsky, of half a dozen nasty little actions fought as the old UN broke up and the new CWS began to take shape. He was supremely competent at everything he did, the quintessential Marine’s Marine. His little spiel on the Galilean satellites was typical. The man always researched the next duty station or deployment, and seemed to command an inexhaustible armory of facts about the place—facts always tempered by long, personal experience.
Jeff touched one of the keys on the vid display, and a computer-generated image of the Roosevelt appeared center-screen, showing the transport’s current attitude. She was an impressive vessel, 200 meters long from the blunt, water-tank prow ahead of the stately pirouette of her hab modules to the massive ugliness of her A-M plasma drives safely far astern. Still, at that resolution she looked damned small adrift in so much emptiness.
The single most revolutionary advance in spacecraft propulsion during the mid-twenty-first century was the steady-thrust antimatter engine, or A-M drive. Developed in parallel during the UN War by both the U.S.-Japanese Alliance and by the European Space Agency, A-M drives transformed space travel within the Solar System from long, lazy, energy-saving Holmann transfer orbits to relatively simple, straight-line, point-and-shoot affairs. Antimatter enthusiastically converted itself plus the equivalent of its own mass in ordinary matter into raw energy and plasma with a very high specific impulse…meaning high efficiency. By mixing matter and antimatter in a one-to-one ratio, a few tons of fuel was enough to take a ship, boosting steadily at one G for half the distance, then flipping over and decelerating for the second half, all the way to Jupiter in a matter of days.
Unfortunately, antimatter was tremendously expensive to produce. Enormous solar-power facilities at L-3 and on the Moon were used to transform sunlight into energy, which in turn was used to create and accumulate antimatter in microgram amounts, using techniques unchanged in principle since the late twentieth century. Because of the expense, most A-M spacecraft employed either conventional fuels “heated” by the insertion of very small amounts of antimatter to increase their Isp, or plasma thrust engines that used a little antimatter to turn a lot of reaction mass—usually water—into plasma, but at much lower thrust-to-weight efficiencies. Spacecraft like the Franklin Delano Roosevelt and the other big A-M cruisers could employ steady-thrust acceleration at one G and reach Jupiter space in a week, but since doing so would consume the entire antimatter output of the U.S. A-M facility at L-3 for the past thirty months, simple economics required a more conservative approach.
Instead of hammering away at One G for the entire trip, the Roosevelt boosted at one G for just twelve hours out of Earth orbit, achieving in that time a velocity of just over 420 kilometers per second. She then coasted for the next twenty-four days, slowing steadily under the gravitational drag from the Sun, but still crossing 900 million kilometers of empty space in twenty-four days rather than years.
But Marines, being Marines, grumbled. They all knew the voyage out could have taken a mere seven days. Instead, they were crowded aboard the transport for over three weeks during the claustrophobic passage to Europa. During her twenty-four-day coast, the Roosey provided a semblance of gravity by rotating the hab modules. Her four boxlike habs spanned sixty meters; by rotating them about the ship’s axis three times per minute, a spin gravity of.3 G was maintained in the lowest decks of each module, with lower gravities on each deck going up toward the axis. The idea was to give the Marines a compromise between acclimating to Europa’s surface gravity of.13 G and letting them maintain muscle tone and general fitness.
In fact, so far as Jeff Warhurst was concerned, three weeks at.3 G was just enough to make the coast phase of the voyage completely miserable. The queasy sensations of Coriolis forces affected everyone’s inner ears, and half of his company was affected by space motion syndrome—“space sickness,” to the layman. The passenger quarters—the “grunt lockers,” as they were called—were jam-packed with humanity sleeping in racks stacked six high and using the common rooms/mess decks, the tiny shower cubicles, and the heads on rotating schedules. A single one of the Roosevelt’s four hab modules could modestly quarter thirty people on three decks; this trip out, the Roosey carried a complete Marine Landing Force—two companies, Bravo and Charlie, plus a recon platoon, headquarters and medical element, and the twelve-man Navy SEAL platoon who’d shipped out with them to run the Manta subs—280 men and women in all, plus the ship’s usual Navy complement of fifteen.
The crowding, the stifling lack of privacy, the stink all seemed unendurable.
Somehow, they endured. It was one of the things Marines did, along with the bitch sessions.
Jeff turned from the screen to study the crowded common room behind him. Laughter barked, mingled with the clatter of weapons being assembled, the hum of overhead ventilators struggling against the mingled smells of sweat, food, and oil. A lot of skin was visible. Six men and four women sat around the mess table cleaning and reassembling their M-580LR rifles, and there weren’t three T-shirts among the lot of them. With so many people crowded into so tiny a vacuum-enclosed space, getting rid of excess heat was a real problem, even as the Sun dwindled astern and the Roosey plunged deeper and deeper into the emptiness of the outer Solar System. The temperature in any of the hab areas was rarely less than thirty-five degrees, and it was steamy with the accumulated sweat and exhaled moisture from so many bodies. The ship’s dehumidifiers simply couldn’t keep up with the load. The stated uniform of the day was tropical shorts and T-shirts, but officers and NCOs alike tacitly ignored the fact that most of the Marines aboard, male and female both, were casually topless, and stripped down to briefs or less when they could. Anything cloth worn anywhere on the body quickly became soaked; Jeff’s shorts, T-shirt, and socks were clinging to his skin now like a wet swimsuit, until he felt like he had a permanent case of diaper rash.
Skin was better. Hell, it wasn’t as though the setting was particularly conducive to sexual interest…or to privacy. The daily shipboard routine was a steady grind of cleaning, study, stripping and cleaning weapons and gear, and exercise. For
