"That video has been posted here many time before"
Sorry Pyro, I emailed the link of the video to a friend and he thought is was a new weapon system so I took it for granted it was. My bad.
It's ok. I personally have the clip on my computer at home. I like watching it from time to time. It's awesome. I went to Boy Scout summer camp across the Chesapeake from Aberdeen Proving Grounds, and we could sometimes hear the ordinance tests from there. Pretty awesome...