Originally Posted by Skippy
You can generally rent schools during the summer. My highschool gets rented out for filming during the summer preatty much every year. I'm sure that if you contact the school board about it, you can get approval.
Always remember, green is the loudest colour.
Does not solve the visibility problems, or the possible damages to the facility and related costs. And you got to have the 'green'. Some of those places are rather pricey.
Filming is one thing, but milsim CQB? That probably wont go down too well.
But, some guys here did it, maybe ask them in PMs?