....could be. Well, the guy says that more will appear for everyone is Vegas to see. So we only need to wait a week. The thing the bothers me is that nearly vertical climb made near the end. There are only a few aircraft that can do this; and AFAIK you would hear the engines in any case. Of course they may have heard the engines and neglected to mention that. Also, I guess it could be some nearly silent test craft from Nellis.