The Breach - Ghost Country - Deep Sky

were trouble. Certain distances from the transmitter were trouble, because of harmonics. Like that. The engineers worked around it.” He offered something like a smile, though nothing about it looked happy. “But by then, certain people were thinking about the side effects in very different ways. Thinking about how to enhance them instead of eliminate them. How to control them. How to use them as weapons in their own right.”
    “Christ,” Travis said. But he could already see the obvious appeal of that kind of technology. A tank battle or a naval engagement would be a hell of a lot easier to win if everyone on the other side was suddenly experiencing what felt like a crack high.
    “They actually built systems like that?” Paige said.
    “They tried. We tried, the Brits tried, Russia tried. Everyone worked out the useful frequencies easily enough. Even found ways to heighten the effects with on-off modulation, or rapid oscillation between frequencies. Scary stuff. Even test subjects, who were well aware of what was happening to them and who were exposed for as little as an hour, had severe reactions. It was a hell of a weapon. Two big problems, though: you couldn’t move it, and you couldn’t point it.” He nodded at Bethany. “Like you said, an ELF transmitter is huge. It’s not some dish you can swivel around toward a target. It’s a straight-line antenna between leads, dozens of miles apart. You basically just have an effective zone around the signal source. So unless you can talk your enemy into lining up right there, nice and neat, there’s not a hell of a lot you can do with a weapon like that. And that was about the extent of it. We kicked it around for a while in the sixties and seventies, looked for ways to make it selective, directional. Probably threw half a billion dollars at it. I’m sure the other guys did the same. But at some point, when you’re not seeing any results, you have to cut your losses. There are better things to spend the defense budget on.”
    He glanced out at the city, shrugged with his eyebrows, looked at the three of them again.
    “So you might imagine it got our attention when Audra Nash came to us in 1986 and said she had an idea. A way to broadcast ELF using satellites. If it were almost any other person—much less a student—the committee wouldn’t have even taken the meeting. But Miss Nash had some credibility to back up her claim. Her work as a grad student had already influenced the design of next-gen communications satellites. She was smart as hell, and she knew the field better than probably anyone. What she wanted from us was access to the results of all the ELF research over the years, all the raw data from the experiments in directing it, focusing it. We barely had to think about it. First, the data wasn’t all that sensitive. It was just a detailed list of all the things that didn’t work. And all the countries out there who could possibly want to steal it didn’t need to: they already had the same data, based on their own failures. Second, we thought her idea might actually have merit. She was brilliant, she had a track record, and she was coming to this problem with fresh eyes. The concept she had in mind was certainly different enough. We hadn’t tried anything like it in all our efforts.”
    “But how could it work at all?” Bethany said. “Just basic physics should make it impossible for a satellite. A transmitter has to be big enough to handle the wavelengths it generates, and ELF waves are huge. Hundreds of miles long.”
    Garner nodded. “Her idea was radical. I don’t pretend to have understood it in detail, but essentially it was this: ELF waves occur naturally in the Earth’s atmosphere. The sun radiates them, and lightning strikes produce them, too. It’s all random, of course. All noise, no signal. And even if the frequencies that affect people happen to appear, they’re drowned out in the clutter and nothing happens. Audra Nash believed a satellite, transmitting much shorter wavelengths with the right precision, could cancel out certain frequencies of natural ELF over a given target area. Could allow us to pick and choose which frequencies to cancel out… and which to leave intact.” He looked at Bethany. “So you’re right. A satellite can’t broadcast ELF, but in theory it could disrupt it where it naturally occurs, and whittle away everything but the useful ranges. At which point, they would certainly affect people. And