Well, it's not new for me. When I was FCO I did this with an Hi-Power Radar ( illumination air targets purpose ).But in fact, I was able to " illuminate" everything, even peoples. Of course, it was a High Power mico-wave beam, so it was very dangerous for the " illimunated " peoples. I have been beamed myself and it's not a very funny feeling !
I was feeling very " hot ".