Tzviel "BK" Blankchtein

CEO & Senior Trainer

Instructor Info

  • +1 (443) 739-1629


Recognized as an expert in protective services, institutional and corporate security consulting, tactical planning, and instruction, Tzviel “BK” Blankchtein brings a wealth of global experience to his engagements.

BK launched the Masada Group in 2007. Developing a multi-channel business, BK personally shaped the organization, one are being healthcare consulting, regulatory compliance and security training.

The business expanded into the healthcare space, providing risk management, personal protection, and security programs for major healthcare systems, including MedStar Health, Johns Hopkins, Sinai Hospital, Northeast Georgia Health System, Emory University, and Walter Reed National Military Medical Center, BK has provided both proactive and reactive strategies based on institutional needs, risk mitigation opportunities, and talent development requirements.



  • Bachelors Degree in Counterterrorism and International Security
  • Masters Degree in Security Managment
  • TECC Instructor
  • TCCC Instructor
  • Leadership & Education
  • Multi-LingualEnglish, Hebrew, & Spanish