With cheap laser pointers available at the local drugstore counter (not to mention online), a lot of kids try pointing them at helicopters. Sometimes they get in a little trouble, too.

But since Christmas, there have been at least seven incidents of a serious, powerful, high-tech laser being aimed at airliners -- something your average inebriated teenager on Winter Break would be hard-pressed to do.

The FBI warned earlier about a possible terrorist attack just like this, and is investigating now.