small circle CQC (close quarters combat), its a form of matial arts made by some american guy who worked in the cia, this is a modified verion adding modern techniques because the original mostly used knives and involved killing people. its basically a way of popping bones from sockets and breaking limbs so the opponent cant win. it is also combine with other matial arts so that kicking and puncxhing is incorporated. the other idea is to incapacitate the opponent quickly.