I asked him if he ever heard a *crackling* type of sound when it's really active (been reported some people can hear it), he said he never heard that.
He said there was always a diesel engine running for power somewhere.
I agree. The first one I saw looked like some kind of alien ship landing just over a hill. Lots of different colored lights (mostly green) moving about and like any good rednecks, we tried to drive to it. lol Others I’ve seen light up the sky overhead in waves of light. It’s impressive but no sounds that I could hear at the time.