Once they were through security they found themselves in a very un-Dutch world of things that were so preposterously enormous that even Texans might nudge their cowboy hats back on their heads and say, holy shit, that’s big . There was a vast open triangular area whose sole purpose was to have nothing whatsoever on it: this was the zone across which the wing would sweep once it began moving. The trusses themselves were the size of seventy-story buildings that had toppled over onto the ground. The nerve center was a horseshoe-shaped building that rose above the level of any conceivable storm surge, commanding the waterway from a sweep of windows. Above that rose a reinforced-concrete tower topped by radars and antennas. A red box, small in comparison to everything else, housed the motor that would actually drive the barrier out into the channel. This, understandably, had come in for a lot of loving attention from maintenance crews during the last few days. As Saskia was whisked from her car toward the south bank’s control center, she exchanged hand waves with a couple of crew members who glanced her way.