Geary stared at the display, amazed. “It’s set up to know where we’re going and tell someone else. Can this thing send messages at faster-than-light speeds?”

Cresida made a frustrated gesture. “I don’t know! I don’t know how it works at all, let alone what it can do. I just know it’s not supposed to be there.”

The lieutenant commander spoke up. “Naturally, none of our security programs or firewalls could spot this. It’s, uh, alien to them, if you’ll pardon the term.”

“There’s nothing we can do about it?” Geary demanded. “We just have to leave this thing infesting our systems?”

That drew a fierce smile from Cresida. “No, sir. I may not know how it works, but I know how to kill it.”

“That’s the first time I ever heard you talk like a Marine, Captain Cresida. How do we kill it?”

Cresida indicated the wavery boundaries again. “I’m sure we can generate quantum wave patterns that have opposite characteristics to these waves. In effect, using destructive interference to cancel out the modulated overlays. We don’t have to know what the pattern does or how it’s sustained to create a very short-lived negative image of it. Once the overlays go to a zero probability state, none of them should reappear except in rare random pieces that couldn’t possibly function.”

Geary frowned in puzzlement. “How could even random pieces reappear if they’ve been reduced to zero probability?”

“It’s… a quantum thing, sir. It doesn’t make sense to us, but that’s how things work on that level.”

The systems-security officer nodded. “In effect, sir, Captain Cresida has suggested creating an antiviral program using quantum-probability-pattern detection and cancellation. It’s a totally new concept, but the actual creation of the program is well within our capabilities.”

“Thank you, Captain Cresida. I don’t think I’m exaggerating when I say that all humanity is in your debt. I want Lieutenant Iger in intelligence briefed on this, too. Any ideas how it got into our systems?”

The others exchanged glances, then Desjani answered. “I’ve been thinking about it since Captain Cresida showed me this. You suspect the hypernet gates were the products of aliens’ technology, sir. Dauntless, like every other ship in the fleet, has an Alliance hypernet key on board that carries its own operating system.”

Cresida’s eyes widened. “Which interfaces with the ship’s navigational system. You could be right. We’ll get into the keys and see what we can find.”

The systems-security officer frowned this time. “But if it is coming from the hypernet key, do we dare sanitize the key? It could somehow bear on the proper functioning of the key.”

“Very good point,” Cresida agreed. “We’d have to tread very carefully there. But we can set up an antiviral screen between the key and the rest of the ship’s systems once we get the program working.”

“Do it now,” Geary commanded. “If you need anything, and you’re not getting it, make sure I know.”

“Yes, sir, but I’d like to wait until after the battle to start.”

“The battle?” Geary almost slapped his own forehead. Between concerns about internal enemies and hostile aliens, the actual looming battle had slipped his mind for a moment. “Yes, of course, after the battle. And if anything else about this comes up that doesn’t have to be dealt with until after that, wait to tell me.” I can’t risk being that badly distracted again. A lot of ships in this fleet could die if I’m not focused on the most imminent threat. What Cresida had found wouldn’t have any effect on the outcome of this engagement, but it would make a very big long-term difference in the aliens’ ability to intervene again on the side of the Syndics. We’re figuring out your tricks, you bastards. And when we’ve figured out enough of them, we’re going to discuss this war with you and what humans do to nonhumans who try to manipulate them.

ONE hour to engagement range if both forces continued on their current course and speed vectors. Now Geary could see the Syndic formation as of twelve minutes ago, still in its rectangular box shape, one of the short sides facing the Alliance fleet like a hammerhead rushing to strike. “Ready?” he asked Desjani.

“Now?” Her eyes were already locked on the enemy formation.

“Yeah, I couldn’t do it earlier without acting uncharacteristically, but I need to give the Syndic CEO commanding that flotilla time to see what I’m doing so I’ll have time to see how they react.” Geary tapped his controls. “All units in the Alliance fleet, assume stations in Formation Echo Four at time three zero, formation stations to form relative to flagship Dauntless.”

At time three zero, the big Formation Delta the fleet had been in broke apart, warships weaving everywhere in a complex dance as they proceeded to stations in five subformations. “This is like the formation you used in Lakota the first time,” Rione noted, as the shapes became apparent.

“Sort of,” Geary confirmed. “The coin-shaped subformations are very flexible. I can pivot each of them easily because of the shape and the smaller size. But they’ll be arrayed differently than in the Echo Five we used at Lakota.” Four coins were forming up in a diamond shape, their broad sides facing the enemy. In the open center of the diamond but farther back, a larger coin centered on Dauntless also faced the enemy.

“Are the auxiliaries bait again?

“No. I’m trying to protect them. I’ve got them in the back of my part of the formation because I have to do something with them, and if the Syndics try to go after our auxiliaries there, they’ll have to run a very nasty gauntlet to get near them.”

He waited, everyone waited, as the minutes crawled by and the Syndics raced closer. Surely the Syndic commander wouldn’t simply charge up the middle. But the Syndic wasn’t maneuvering, wasn’t aiming for one part of the Alliance fleet. Twenty minutes to contact. Fifteen minutes to contact. Was the Syndic paralyzed with indecision, stupid, or carefully waiting until the last possible moment to shift his formation’s course?

It was getting too close, and the Syndic box could still veer up, down, or to the side against any single Alliance subformation. Geary knew he couldn’t wait any longer. He mentally split the difference between possible Syndic actions, figuring out Alliance maneuvers that were particularly tricky because of the way momentum would affect course vectors after changes in heading. Hoping he’d gotten it right, he called out orders. “Formation Echo Four Two, turn together and alter course to port zero eight five degrees up one zero degrees at time one five.” That would cause Echo Four Two to change from a flat formation like an onrushing wall with all ships facing forward, into a knife-edge with the ships facing the thin edge, slicing left and up across the space the Syndic flotilla should cross about the same time. “Formation Echo Four Three, turn together and alter course to starboard zero eight one degrees, down one zero degrees at time one six.” The same thing, only with the subformation on the left side of the diamond slicing to the right and down.

He had to take a breath before calling the next two orders. “Formation Echo Four Four, turn together and alter course up zero nine zero degrees at time one seven. Formation Echo Four Five, turn together and alter course down zero nine five degrees at time one eight.” That would bring the top and bottom of the diamond slashing across the center as well.

Now for the biggest single portion of the fleet, the large trailing formation containing Dauntless and the auxiliaries. “Formation Echo Four One, pivot down zero nine zero degrees around flagship Dauntless as guide and alter course up zero one zero degrees at time two zero. All units in the Alliance fleet fire missiles and hell lances as the enemy enters engagement envelopes.”