As my bladder cut loose, so did my eyes. I wept, crying silently and rocking back and forth while the tears and snot ran down my face. It was all I could do to keep from sobbing -- I covered my mouth and held the sounds in. I didn't want to give them the satisfaction.

Finally, I was peed out and cried out and the guy was pounding on the door. I cleaned my face as best as I could with wads of toilet paper, stuck it all down the john and flushed, then looked around for a sink but only found a pump-bottle of heavy-duty hand-sanitizer covered in small-print lists of the bio-agents it worked on. I rubbed some into my hands and stepped out of the john.

"What were you doing in there?" the guy said.

"Using the facilities," I said. He turned me around and grabbed my hands and I felt a new pair of plastic cuffs go around them. My wrists had swollen since the last pair had come off and the new ones bit cruelly into my tender skin, but I refused to give him the satisfaction of crying out.

He shackled me back to my spot and grabbed the next person down, who, I saw now, was Jolu, his face puffy and an ugly bruise on his cheek.

"Are you OK?" I asked him, and my friend with the utility belt abruptly put his hand on my forehead and shoved hard, bouncing the back of my head off the truck's metal wall with a sound like a clock striking one. "No talking," he said as I struggled to refocus my eyes.

I didn't like these people. I decided right then that they would pay a price for all this.

One by one, all the prisoners went to the can, and came back, and when they were done, my guard went back to his friends and had another cup of coffee -- they were drinking out of a big cardboard urn of Starbucks, I saw -- and they had an indistinct conversation that involved a fair bit of laughter.

Then the door at the back of the truck opened and there was fresh air, not smoky the way it had been before, but tinged with ozone. In the slice of outdoors I saw before the door closed, I caught that it was dark out, and raining, with one of those San Francisco drizzles that's part mist.

The man who came in was wearing a military uniform. A US military uniform. He saluted the people in the truck and they saluted him back and that's when I knew that I wasn't a prisoner of some terrorists -- I was a prisoner of the United States of America.