Which was not a mere figure of speech. The army had given Laks’s crew access to such equipment. In virtual-reality mode, sitting far from the front, you could pull up a 3D map, Google Earth style, and pan and zoom up and down the length of the Line all day long, or until you were overcome by motion sickness. From a distance it looked fat and solid but as you zoomed in, it frayed to a loose-spun yarn. He remembered taking art classes in school, learning that instead of laying down a simple firm stroke you should make many fine scratches and gradually thicken the ones that were in the right place. That was how the Line looked when you zoomed in, each scratch being the record of where it had been for ten minutes three weeks ago.