Throat Knife Threat: Basics & Blunders in Self defense (Part 1). Add great self defense against weapon wielding attackers to whatever fighting system you practice. This is all we do and can help anybody who is involved in Kravmaga, BJJ, MAA, Karate, Kungfu, Aikido, Hapkido, or Military and Police tactics become a specialist in weapons defenses. If you don’t practice these defenses you are not supposed to know what to do and we can fast track you. Click SUBSCRIBE to become a part of our family of specialists.