If your interested in a peek at the NZ SAS CQB vs USA CQC CQD check out this clip from a Doco here...
About 3 mins in you get a good peek at the surface of CQB, wicked Doco series even though im somewhat bias.
http://www.youtube.com/watch?v=1OFcMM5KxcM
Ive had the bennifit of experiencing alot of the techs through people i know and there are many similarities in strategy and mechanics of VT even though the training is vastly different. Its brutal but effective and what you see is rather tame for TV.
DREW