Jeff Marquart

Executive Vice President

Jeff Marquart provides high-level consultation through all service divisions of our firm, including Protective Security, Global Intelligence, Threat Assessment and Management, Investigations, and Training.

For more than 25 years, Jeff has personally designed security strategies and supervised high-level protective operations for some of the world’s most influential people and enterprises. During this time, Jeff has also managed client risk in a multitude of environments, including private estates, domestic and international travel, scheduled and unscheduled public appearances, special events and meetings, and Federal Court trials.

Jeff has played key roles during security operations involving the U.S. Secret Service, every branch of the U.S. Military, and many foreign government agencies that protect heads of state and other high-ranking government officials. He continues to advise Fortune 500 corporations, government agencies, universities, and public figures. Prior to joining our firm, Jeff was a key participant in the Security Program for a member of 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 contributed his subject matter expertise to Forbes, Parade, Los Angeles Magazines, and others. Jeff is also 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 has been with GDBA since 1995.