It was a large cylindrical craft, over thirty feet in length, with immense "wings" of solar receptors to power the onboard Ku-band radar. The solar cells had degraded over the years in the intense radiation environment, allowing only a few minutes of operation per revolution. The ground controllers had waited what seemed a long time for this opportunity. The orbital track was northwest-to-southeast, within six degrees of being directly overhead, close enough to see straight down into the valley. They already knew a lot. The geological history of the place was clear. A river now blocked with a hydroelectric dam had cut the gorge deep. It was more canyon than valley at this point, and the steep sides had been the deciding factor in putting the missiles here. The missiles could launch vertically, but incoming warheads would be blocked from hitting them by the mountains to east and west. It didn't make any difference whose warheads they were. The shape and course of the valley would have had the same effect on Russian RVs as Americans'. The final bit of genius was that the valley was hard rock. Each silo had natural armor. For all those reasons, Scott and Fleming had bet much of their professional reputations on the tasking orders for the KH-12.

"Right about now, Betsy," Scott said, checking the wall clock.

"What exactly will you see?"

"If they're there, we'll know it. You follow space technology?" Fleming asked.

"You're talking to an original Trekkie."

"Back in the 1980's NASA orbited a mission, and the first thing they downloaded was a shot of the Nile delta, underground aquifers that feed into the Mediterranean Sea. We mapped them."

"The same one did the irrigation canals down in Mexico, right, the Mayans, I think. What are you telling me?" the AMTKAK official replied.

"It was our mission, not NASA's. We were telling the Russians that they couldn't hide their silos from us. They got the message, too," Mrs. Fleming explained. Right about then the secure fax machine started chirping. The signal from the KH-12 had been crosslinked to a satellite in geostationary orbit over the Indian Ocean, and from there to the U.S. mainland. Their first read on the signals would be unenhanced, but, they hoped, good enough for a fast check. Scott took the first image off the machine and set it on the table under a bright light, next to a visual print of the same place.

"Tell me what you see."

"Okay, here's the mainline…oh—this thing picks up the ties. The rails are too small, eh?"

"Correct." Betsy found the spur line. The concrete rail ties were fifteen centimeters in width, and made for a good, sharp radar return that looked like a line of offset dashes.