Hm, so that construction site followed the plane pretty well by just sitting there and having been left on. But if you read the genious in the first article - "Hawk said the laser had to have been fairly sophisticated to track a plane traveling at that altitude." Gee, I guess he doesn't know the beam spreads. Yes, a dot would be hard to keep on it, but not the huge spread a cheap pointer will have, expecially at that altitude.