We do scenario training like that, but of course not with real guns. It's more the kind of scenario where you have to interact with actors, who are usually police officers acting the part. That happens a fair amount at the Ontario Police College. They have a little village set up with mock stores and mock buildings and apartments and street intersections, etc., where they can do that sort of training with actors.
On February 8th, 2007. See this statement in context.