Five of these guys just flew over my office (which is by the BG airport, in case you were concerned) and it was the loudest thing ever. I was pretty sure they were going to land on my desk. It was awesome.
They are the US Navy Blue Angels and if you ever have a chance to watch them do an airshow I highly recommend it.
My brother was stationed in Pensacola when he was in the Navy and that is where the Blues are stationed. We went there one Spring Break and my mom and I were laying out on the beach watching them practice. It was too cool!