Tzviel “BK” Blankchtein served in the Israeli military, following his 5 years in special operations with 18 more as a reservist.  BK’s expertise relates to leading-edge defense strategies for maintaining territorial integrity and combatting terrorist attacks.  Since immigrating to the USA, BK has leveraged his training to teach and train agencies across the United States for over 20 years.

BK is the owner of Masada Tactical LLC, and trains civilians, law-enforcement, and security professionals in firearms tactics, self-defense/Krav-Maga, tactical medicine, and corporate security strategies.  BK is a sworn police officer in Alabama, and the Sgt, of the Special Operations Response Team for Baltimore County EMS.  He holds a Bachelor’s degree in International Security and Counterterrorism, and a Masters degree in Security Management.