It’s not impossible to track someone who does this.
Laser pens don’t shine far you can’t discard it and feel good about it. This is the kind being used.
http://www.youtube.com/watch?v=J4kjpG-vXQM
The one in the video is like 650 dollars and theres only 1 company that i know of that makes it. If you shine it into an airplane you can’t just blend into the crowd not many people own these and online sales are trackable.
It seems a little bit ridiculous for someone to go to prison for shining a laser pen at an airplane. The FBI does in fact investigate small laser pens pointed at airplanes.
Every narco criminal south of the border will have these and somebody will make them cheap.