У вашего броузера проблема в совместимости с HTML5
Andrew "the Squid" Montañez shows you how to disarm an attacker wielding a knife.
About Squid:
Originally from Queens, NYC, Andrew "the Squid" Montañez has a history of taking down the competition. He has dominated at Vale Tudo contests, Grappler's Quest Nationals, even the National Fighting Championship. Follow him on Twitter at http://www.twitter.com/AndrewJitsu.