"I see," Honor said. Thurman was right, of course. At six hundred k-tons, a Mars-class was as big as many an older battlecruiser, and their impellers had brute power to burn. "And their locus?" she asked after a moment.
"Right in the middle of the Alpha Zone, Admiral," Thurman said, and this time there was a sense of something very like exultation under the completely understandable fear the odds had produced in her.
Honor understood exactly why that was, and Nimitz made a soft sound, midway between a growl and a snarl, as he shared her fierce surge of satisfaction.
That has to be a pair of transports—probably stuffed full of more SS intervention units, or even Marines—and a heavy escort, she thought. It's the only thing that makes sense... and the fact that there are only two transports and nothing heavier than a battlecruiser means someone threw the entire force together in a hurry. Battlecruisers can do the job of blowing a hole in the orbital defenses if they have to, but if they had their druthers, they'd certainly have brought along at least a few battleships, and preferably a superdreadnought or two. And if they put it together too hastily, then maybe—
She closed her eyes for a moment while her thoughts raced. Were those ships SS, PN, or a combination of the two? She would prefer for them all to be SS, given the difference in training standards and general capability, but it might be even better if they were a scratch force from both services that hadn't had time to shake down into an efficient fighting machine. Sort of like us, in that respect, a corner of her brain thought wryly.
Yet there was no way she could divine the origin of the task group's units, and she put the thought aside as one worth keeping in mind but not one she could afford to waste time upon. Instead, she felt her brain turning into another channel, following smoothly down the logic tree she'd put together last week. She hadn't really expected to need it this soon, and she wasn't at all sure her crews were sufficiently trained to pull it off even if everything went perfectly. Even so, she blessed the circumstances which had put her in position to at least try it. And if they could make it work...
Honor had run endless computer analyses of every tracking report in Charon Control's main data base, examining the record of every single arrival in the history of the Cerberus System. She hadn't known exactly what she was looking for—only that no information was ever completely useless and that she needed any data she could possibly get if she was to evolve a tactical approach that might have a chance of dealing with a heavy enemy force. And so she'd set the computers to work, churning their way through the raw reports, and last week, those computers had reported an interesting fact.
Every InSec and SS ship ever to visit Cerberus had translated into n-space at low cee and on headings very close to least-time courses to Hell, allowing for h-space astrogation discrepancies... and so had the only two regular Navy units—Count Tilly and Heathrow's courier boat—ever to visit Cerberus. But they'd all done so from above the plane of the ecliptic. That was unusual. Most skippers tried to make transit in or very close to the system ecliptic because the hyper limit tended to be a little "softer" in that plane. It made for a slightly gentler transit, reduced wear on a ship's alpha nodes by a small but measurable degree, and allowed a little more margin for error in the transiting ship's hyper log position. So if every skipper made a high transit approaching Cerberus-B, she'd realized, there must be a specific reason for it.
It had taken Command Phillips another full day of digging to confirm Honor's suspicion, and the explanation had vastly amused her, for there was no reason... except for the fact that Peep bureaucratic inertia seemed to be even greater than the RMN's. Honor had always assumed that the Manticoran Navy held the galactic record for the sheer mass of its paperwork, but she'd been wrong, for the Peep arrival patterns went back to a bureaucratic decree that was over seventy T-years old, and as foolish today as it had been when it was originally promulgated.
The very first InSec system CO had taken it upon herself to instigate the procedure as a "security measure," and no one had ever bothered to countermand her orders. As nearly as Honor could figure out, the high transit had been designed as an additional means of identification. Because it represented an atypical approach pattern, Camp Charon's tracking officers would be able to recognize friends even before they transmitted their IDs in-system. Given how much sensor reach and tracking time Charon had, the maneuver was among the more pointless ones Honor had ever come across. The planetary garrison had ample time to identify anything that came calling long before it reached their engagement envelope, and over the years, the high approach had probably cost hundreds of millions of dollars in gradual, unnecessary wear on the alpha nodes of the ships that had executed it.
But it had never even been questioned. Indeed, by now, she suspected, no one had the least idea why the measure had been instituted in the first place. It was simply a tradition, like the equally irrational RMN tradition that light cruisers and destroyers could approach one of the Star Kingdom's orbital shipyards from any bearing, but heavy cruisers and capital ships always approached from behind, overtaking the yard in orbit. No doubt there had once been a reason (of some sort, at least) for that; today, neither Honor nor anyone else in the Navy knew what it had been. It was simply the way things were done.
But if the reason for the SS's traditional approach to Hell really didn't matter at the moment, the fact that it had offered Honor the chance to lay the equivalent of a deep space ambush certainly did, and she'd grabbed it. There was always the chance that someone would break the pattern, but if they followed it, she could make a much more precise prediction than usual of where they would drop into normal-space... and of the course they would pursue after they did. That was why she had chosen to hold her ships where they were while her crews worked doggedly in the simulators. She could have kept them in orbit around Hell or hidden them behind the planet's moons, but they could carry out sims as well here as there, and if someone happened to come calling in the meantime...
As someone had, she told herself, and opened her eyes once more.
"Their time to Hades?" she asked Thurman crisply.
"CIC makes it roughly six and a quarter hours, with turnover a hundred and eighty-two minutes after arrival, Ma'am." Thurman glanced at her pad, then checked her chrono. "Call it another six hours even from right now for a zero-zero intercept."
"They won't go for a zero-zero," Honor said, and one or two of the people seated at her table looked at her a bit oddly as they heard the absolute assurance in her voice. She felt their reservations and turned her head to give them one of her crooked grins. "Think about it, people," she suggested. "They didn't bring all those escorts along just to say hello to Warden Tresca! The fact that they're present in such force indicates that they have to be suspicious, at the very least. And that means that whoever's in command over there has no intention whatsoever of straying into Camp Charon's powered missile envelope."
"Then where do you think they will, stop, Admiral?" Commander Inch asked quietly.
"Right around seven million klicks from the launchers," Honor said positively. One or two other sets of eyes went blank for a moment as people worked the math, and then several heads nodded slowly.
Manticoran missiles and seekers had improved steadily since the war began, and the Peeps' front-line weapons had followed suit, although their improvements had been less dramatic. But Cerberus was a rear-area system whose primary defense had been that no one had the least idea how to find it. Its missiles were the same ones it had been given before the war began, with standard prewar drive options and a maximum acceleration of eighty-five thousand gravities. But by dialing the birds' acceleration down to half that, endurance could be tripled from sixty seconds to a hundred and eighty, and range from rest at burnout upped from one million five hundred thousand kilometers to approximately six million seven hundred and fifty thousand. The lower acceleration made them easier to intercept in the early stages of flight, but velocity at burnout was actually fifty percent greater. Just as importantly, it also allowed them to execute terminal attack maneuvers at much greater ranges, and Charon Control had enough launchers to fire salvos sufficiently massive to swamp anyone's point defense.