It's not always this affective but results do vary. However it is dangerous to just do b/c of the varying results.
As one commenter said below the video;
Nice demo. Do be careful with hits to the brachial plexus. They can cause serious injuries to the carotid, and its unpredictable - one hit the guy's lights just go out for a minute, same hit same strength same person another day can cause it to stick shut. cheers for posting though.
He was asking the other Marine to Demo the Knife Hand strike for a MCMAP Belt Test.
He did .....
[ame]http://www.youtube.com/watch?v=bOgFnlOmjKA[/ame]
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