I think this is someone pulling Arts leg! The supposed Intruder alarms from the ground are the same volume throughout, as is this plane engine. I
think someone probably found area 51 on like microsoft flight simulator and is having a laugh.
Originally posted by BeyondBelow
This was exposed as a hoax, this same guy called back art bell and told him he was acting and then repeated part of his act to art. Such a shame these people prey on the group of people just trying to find some truth or facts.