"They're so small they are evading our turbo lasers"

Bridges this morning had acquired a crop of strange white globes and a mysteriously flickering thing on a tripod. The thing was a lazer scanner which rotates, firing lazer beams at the surroundings which then bounce back, are detected and used to create a 3D computer model of the architecture. We'll see if this can be used to make a fly-through version of Bridges. But what if you get hit by the lazers? We'll never know; the skaters out early at Bridges were simply too quick to hit, dodging the beams.