In the case of lasers from a show like that hitting aircraft, I believe that the operators have to seek approval from the CAA ( ?). Checking flight paths and times. I remember when working in Broome at a nightclub we had a few high powered (normal) lights that criss crossed the sky. They were turned off before any aircraft were landing or taking off cause the flight path was very very close to the location of the club.
Cheers
Bartman
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