Yet Another Edi Query

I was intrigued by the ordinary looking house opposite the cargo area which is at the point where a road joins the airport cargo road. It looks like an ordinary house and is called “Old Lennie School House” but I was amazed by the quantity of CCTV Cameras on and around it. I have never seen so many cameras in one place along with a number of notices saying that you risked personal injury or death by venturing onto the grounds. If something was to be kept hidden, all this does is to draw attention to it.