Is simply shining a Class 3+ laser into the sky illegal?

I am curious on the legality of shining a very visible green Class 3+ laser into the sky...assuming it's not purposely directed at any aircraft, buildings, cars or people. I live in the SW USA.

Mainly, I'm curious how they are regarded as they're still pretty rare among the population in general. Also, how would LEO types deal with them?

PS: I guess my avatar is somewhat incriminating.