[barrkel]

Were you at the other end of that 200 yard beam? I remember playing with presentation lasers when I was a teenager. At night, you could light up the side of a building, visibly, from over a kilometer away. The divergence factor is certainly substantial - this makes it easier to hit a plane from distance - but it's still very bright. I remember thinking that they would make useful point-to-point morse code transmitters at night, because the "dot" is highly visible at the other end of the beam, even over substantial distances.

But I'd certainly agree that the astronomy lasers are a far bigger threat, the presentation lasers are more likely to be just a minor nuisance over any kind of range.