Before aviation I worked in construction.
Working on a house one day the owner arrived, fuming and shaking his fist at a military chopper passing overhead, muttering about making a formal complaint etc etc.
"Did you buy this property on a weekend?" I asked.
"Errr, yes" was the reply.
I then handed him a copy of that days newspaper, the front page celebrating 25 years of operation of said type of chopper from a nearby airbase.
He never realised he had bought, under the circuit, near a base that had been there for 50 years, operating choppers for the last 25.
******.