How is the amazing coordination achieved in this fantastic video?

Question: How is the amazing coordination achieved in this fantastic video!?

And do you know any other videos like it!.
http://uk!.youtube!.com/watch!?v=V9Jo0BRdbO!.!.!.Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Easy!. In North Korea if you make a mistake you end up in a prison campWww@QuestionHome@Com

Haha!.!.!. like any other marching show!.!.!. a lot of practice and a lot of yelling! LOL

And oh man!.!.!. check out the drum major at around 4:30!.!.!. she's just groovin' out with her bad self! HAHAHAHA!!!

Thanks for the interesting vid!.!.!. I don't know of any like it, but if I find one, I'll post a link!.! :)Www@QuestionHome@Com