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Jeffrey W. Marquart

Bio Portrait

As Executive Vice President of Gavin de Becker & Associates, Jeff directs all service divisions of our 520-member consulting firm, including the Protective Security Division, Threat Assessment and Management, Technical Security Division, and the Training and MOSAIC Divisions. 

Jeff has personally designed protective security strategies and supervised high-level protective operations and logistical support for high-risk situations for 25 years.  He has managed hundreds of protective details for the world’s most prominent public figures, in diverse environments (film and television locations, domestic and international travel details, private estates, public appearances/events, Federal Court trials, assignments aboard private yachts on inland and international waters, etc).  Jeff has worked extensively with the U.S. Secret Service, every branch of the U.S. Military, and many foreign government agencies that protect heads of state and other officials.

Along with Gavin de Becker and Michael LaFever, Jeff provides the firm’s high-level consultation on safety and privacy.  He advises Fortune 500 corporations, government agencies, universities, and public figures.

Prior to joining our firm, Jeff was a key participant in the Security Program for the Saudi Arabian Royal Family.

Jeff is co-author of JUST 2 SECONDS: Using Time and Space to Defeat Assassins.  The book is based upon the study of more than 1,400 attacks and incidents involving public figures.

He has written many articles and white papers about public figure security and received the American Society of Business Publications National Award for his article Can a Determined Assassin be Stopped? (published in Security Management Magazine).  He authored Baby Wrangling: When Your Principal is a Child (published in Tactical Response and Security Magazine).  Jeff has contributed subject matter expertise to Forbes, Parade, and Los Angeles Magazines.

Jeff is a senior member of our training staff, specializing in protective strategies and operations. He is a member of the American Society of Industrial Security, the Association of Threat Assessment Professionals, and the International Association for Counter-terrorism and Security Professionals.

Jeff is a partner in the firm and has been with GDBA since 1995.