Oh, it's very simple. A paper that you co-auth.o.r.ed for the Astrophysical Journal was found to contain material germane to weapons research.

Wait. That paper never got past peer review. It was rejected. How could your office hear of it?

I honestly don't know. I'm not on the technical end.

She scanned the pages. 'Cease and desist'? A subpoena?

Yes. In a nutsh.e.l.l, we need all of your records pertaining to this research, and a statement that you have destroyed all duplicates, and a promise that you will discontinue the project until you hear from us.

She looked at him and then back at the doc.u.ment. This is a joke, right?

I a.s.sure you it is not.

Major... this is not some sort of gun we're designing. It's an abstraction.

I don't know anything about that.

How on G.o.d's green earth do you think you can stop me from thinking about something?

That's not my business. I just need the records and the statement.

Did you get them from my co-author? I'm really just a hired hand, called in to verify some particle physics.

I understand that he's been taken care of.

She sat down and put the three pages on the desk in front of her. You can go. I have to study these and consult with my department head.

Your department head is in full cooperation with us.

I don't believe that. Professor Hayes?

No. It was J. MacDonald Roman who signed- Macro? He's not even in the loop.

He hires and fires people like you. He's about to fire you, if you aren't cooperative. He was completely still, and didn't blink. It was his big line.

I have to talk to Hayes. I have to see what my boss-''

It would be better if you just signed both doc.u.ments, he said mildly, theatrically, and then I could come by tomorrow for the records.

My records, she said, cover the spectrum from meaningless to redundant. What does my collaborator have to say about all this?

I wouldn't know. I believe that was the Caribbean branch.

He disappeared in the Caribbean. You don't suppose your department killed him.

What?

Sorry. The army doesn't kill people. She got up. You can stay here or come along. I'm going to copy these pages.

It would be better if you didn't copy them.

It would be lunacy if I didn't.

He stayed in her office, probably to snoop around. She walked past the copy room and took the elevator down to the first floor. She stuffed the papers into her purse and jumped into the lead cab at the stand across the street. Airport, she said, and considered her diminishing options.

All of her travel to and from D.C. had been on Peter's open account, so she had plenty of credits to get to North Dakota. But did she want to leave a trail pointing directly to Julian? She would call him from the airport public phone.

But wait; think. She couldn't just get on a plane and sneak off to North Dakota. Her name would be on the pa.s.senger list, and somebody would be waiting for her when she got off the plane. Change destination, she said. Amtrak station. The cab's voice verified the change and it made a U-turn.

Not many people traveled long distances by train, mostly people phobic about heights or just determined to do things the hard way. Or people who wanted to go someplace without leaving a doc.u.ment trail. You bought train tickets by machine, with the same kind of anonymous entertainment chits you used for cabs. (Bureaucrats and moralists would love to have had the clumsy system replaced with plastic, like the old cash cards, but voters would just as soon not have the government know what they were doing when, and with whom. The individual coupons made barter and h.o.a.rding simple, too.) Amelia's timing was perfect; she ran for the 6:00 Dallas shuttle and it pulled out just as she sat down.

She turned on the screen on the back of the seat in front of her and asked for a map. If she touched two cities, the screen would show departure and arrival times. She jotted down a list; she could go from Dallas to Oklahoma City to Kansas City to Omaha to Seaside in about eight hours.

Who you runnin' from, honey? An old woman with white hair in short spikes was sitting next to her. Some man?

Sure am, she said. A real b.a.s.t.a.r.d.

The old woman nodded and pursed her lips. Best you get some good food to carry while you in Dallas. You don' wanna be livin' on the c.r.a.p they serve in that lounge car.

Thank you. I'll do that. The woman went back to her soap opera and Amelia punched through the Amtrak magazine, See America! Not much she wanted to see.

She pretended to nap the half hour to Dallas. Then she said good-bye to the spike-coiffed lady and dove into the crowd. She had more than an hour before the train to Kansas City, so she bought a change of clothing-a Cowboys sweatshirt and loose black exercise pants-and some wrapped sandwiches and wine. Then she called the North Dakota number Julian had left her.

Jury change its mind? he asked.

More interesting than that. She told him about Harold Ingram and the threatening paperwork.

And no word from Peter?

No. But Ingram knew that he was in the Caribbean. That's when I decided I had to run.

Well, the army's tracked me down, too. Just a second. He left the screen and came back. No, it's just Dr. Jefferson, and n.o.body knows he's here. He's pretty much joined us. The phone camera tracked him as he sat down. This Ingram didn't mention me?

No, your name's not on the paper.

But it's only a matter of time. Even not connecting me with the paper, they know that we live together and will find out I'm a mechanic. They'll be here in a few hours. Do you have to change trains anywhere?

''Yes.'' She checked her sheet.' The last one is Omaha. I'm supposed to get there just before midnight... eleven forty-six Central Time.

Okay. I can get there by then.

But then what?

I don't know. I'll talk it over with the Twenty.

The twenty whats?

Marty's bunch. Explain later.

She went to the machine and, after a moment's hesitation, just bought a ticket as far as Omaha. No need to guide them any farther, if she was being followed.

Another calculated risk: two of the phones had data jacks. She waited until a couple of minutes before the train was going to leave, and called her own database. She downloaded a copy of the Astrophysical Journal article into her purse notebook. Then she instructed the database to send copies to everyone in her address book with *phys or *astr in their ID lines. That would be about fifty people, more than half of them involved with the Jupiter Project in some way. Would any of them read a twenty-page draft that was mostly pseudo-operator math, with no introduction, no context?

She herself, she realized, would look at the first line and dump it.

Amelia's reading on the train was less technical, but severely limited, since she couldn't identify herself to access any copyrighted material. The train had its own magazine on-screen, and courtesy images of USA Today and some travel magazines that were just ads and puffery. She spent a lot of time looking out the window at some of America's least appealing urban areas. The farmland that flowed by in the dusk between cities was peaceful, and she dozed. The seat woke her up as they pulled into Omaha. But it wasn't Julian waiting for her.

Harold Ingram stood on the platform, looking smug. It's wartime, Professor Harding. The government is everywhere.

If you tapped a public phone without a warrant- Not necessary. There are hidden cameras in all train and bus stations. If you are wanted by the federal government, the cameras look for you.

I haven't committed any crime.

I don't mean 'wanted' in the sense of a wanted criminal. Just desired. Your government desires you. So it found you. Come with me, now.

Amelia looked around. Running was out of the question, with robot guards and at least one human policeman watching the area.

But then she saw Julian, in uniform, half hidden behind a column. He touched a finger to his lips.

I'll go with you, she said. But this is against my will, and we're going to wind up in court.

I certainly hope so, the major said, leading her toward the terminal. My natural habitat They pa.s.sed Julian and she could hear him fall into step behind them.

They pa.s.sed through the terminal and walked toward the lead cab in line outside.

Where are we going?

First flight back to Houston. He opened the cab door and helped her in, not too gently.

Major Ingram, Julian said.

One foot in the cab, he half-turned. Sergeant?

Your flight's been canceled. He had a small black pistol in his hand. It fired almost inaudibly, and as Ingram slumped, Julian caught him and appeared to be helping him into the cab. 1236 Grand Street, he said, feeding it a chit from Ingram's book. He pocketed the book and closed the door. Surface roads, please.

It's good to see you, she said, trying to sound neutral. We know someone in Omaha?

We know someone parked on Grand Street.

The cab worked its zigzag way across town, Julian watching behind for a tail. It would have been obvious in the spa.r.s.e traffic.

When they turned onto Grand Street he looked ahead. The black Lincoln in the next block. Double-park next to it and we'll get out there.

If I am ticketed for double-parking, you will be liable, Major Ingram.

Understood. They pulled up next to a big black limousine with North Dakota clergy plates and opaque windows. Julian got out of the cab and hauled Ingram into the back seat of the Lincoln. It looked like a soldier a.s.sisting a drunken comrade.

Amelia followed them. In the front seat was the driver, who was a rough-looking gray-haired man with a priest's collar, and Marty Larrin.

Marty!

To the rescue. Is that the guy who served you the papers? Amelia nodded. As the car started, Marty held out his hand to Julian. Let me see his ID.

He handed over a long wallet. Blaze, meet Father Mendez, late of the Franciscan order and Raiford Maximum Security Prison. He flipped through the wallet as he talked, holding it up to a small dashboard light.

Dr. Harding, I presume. Mendez held a hand up in greeting while he steered with the other one, the automobile under manual control. In the next block a chime sounded and Mendez let go of the wheel and said, Home.

This is annoying, Marty said, and switched on the overhead light. Check his pockets and see if he has a copy of his orders. He held up the wallet and scrutinized a photo of the man with a German shepherd. Nice dog. No family pictures.

No wedding ring, Amelia said. Is that important?

Simplify things. Is he jacked?

Amelia felt the back of his head while Julian rifled his pockets. Wig. She lifted the back of it with a painful ripping sound. Yes, he is.

Good. No orders?

No. Flight manifest, though, for him and up to three others, 'two prisoners plus security.'

When and where?

Open ticket to Washington. Priority 00.

Real high or real low? Amelia asked.

The highest. I think you might not be our only mole, Julian. We need one in Washington.

This guy? Julian said.

"After he's been jacked with the Twenty for a couple of weeks. It'll be an interesting test of the process's effectiveness. They didn't know how extreme a test it would be.

WE HADN'T BROUGHT HANDCUFFS or anything, so when he started to stir halfway to St. Bart's, I gave him another pop with the trank gun. Searching for his papers, I'd found an AK 101, a small Russian flechette pistol that's a favorite of a.s.sa.s.sins everywhere-no inconvenient metal. So I didn't want to sit in the back seat and chat with him, even with his gun safe in the glove compartment. He probably knew some way to kill me with his pinky.

It turns out I was close. When we got him to St. Bart-tying him to a chair before administering the ant.i.trank - and jacked him one-way with Marty, we found out he was a special operator for Military Intelligence, a.s.signed to the Office of Technology a.s.sessment. But there was little else there, other than memories of his childhood and youth, and an encyclopedic knowledge of mayhem. He hadn't been treated to the selective memory transfer, or destruction, that Marty had said I would need for my own mole burrowing. It was just a strong hypnotic injunction, which wouldn't hold up for long, after he was jacked two-way with the Twenty.

Until then, all he and we knew was what room in the Pentagon he was to report to. He was to find Amelia and bring her back-or kill her and himself if it came to a desperate situation. All he knew about her was that she and another scientist had discovered a weapon so powerful that it could win the war for the Ngumi if it fell into the wrong hands.

That was an odd way of characterizing it. We used the metaphor pressing the b.u.t.ton, but of course for the Jupiter Project to proceed to its final cataclysmic stage, you needed a team of scientists, doing a sequence of complicated actions in the proper order.

The process could be automated, in theory, after the first careful walk-through. But then once you'd done it, there would be no one left to automate it.

So someone on the Astrophysical Journal jury was linked to the military establishment-no surprise. But then was the jury's rejection because of pressure from above, or had they actually found an error in our work?

One part of me wanted to think, well, if they actually had disproved our theory, there would be no reason to go after Amelia, and presumably Peter. But maybe Intelligence thought it would be prudent to get rid of them anyhow. There's a war on, they keep saying.

There were four of us in the plain conference room, besides the jacked couple: Amelia and me, Mendez, and Megan Orr, the doctor who checked out Ingram and administered the ant.i.trank. It was three in the morning, but we were pretty wide awake.

Marty unjacked himself and then pulled the plug out of Ingram's head. Well? he said.