Kamikaze Pilot

Anyone got the scoop on the kamikaze pilot flying over the lake this weekend? I was sitting in my office hearing what sounded like either a troubled plane or one heck of a race going on in the sky. I walked outside and joined several of my neighbors in trying to figure out what the heck was going on. We got quite a show! Was it flying practice? Stunt devil? Adrenaline junkie? If you've got the answer, let us know!