Mark F. Giuliano Named Executive Assistant Director of the National Security Branch

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Director Robert S. Mueller, III named Mark F. Giuliano as the new executive assistant director of the National Security Branch (NSB) at FBI Headquarters (FBIHQ). He most recently served as assistant director of the Counterterrorism Division at FBIHQ.

“I am confident that under Mark’s leadership in managing international and domestic counterterrorism investigations, NSB will continue its strategic focus and address new and emerging threats that endanger the United States and its citizens,” said Director Mueller.

Prior to his appointment as assistant director, Mr. Giuliano was the deputy assistant director for Operations Branch II, Counterterrorism Division at FBIHQ. He oversaw all domestic terrorism operations in the United States.

He was section chief of the Domestic Terrorism and Strategic Operation Section, and before his career in the Counterterrorism Division, he served as assistant special agent in charge of national security for the Atlanta Division. He was responsible for FBI counterterrorism and counterintelligence operations in Georgia, as well as that field office’s multi-agency Field Intelligence Group and Joint Terrorism Task Force. 

Mr. Giuliano served as the FBI’s on-scene commander in Afghanistan, where he led a group of FBI personnel who supported U.S. Special Forces components.

He was assigned as supervisory special agent of the Atlanta Division’s violent crimes and international terrorism squads. Prior to his assignment in Atlanta, Mr. Giuliano served in the Violent Crimes Section at FBIHQ, where he was responsible for the fugitive and Top Ten programs.  

Mr. Giuliano’s FBI career started at the Washington Field Office’s Safe Streets and Gang Task Force. He also served on the Special Weapons and Tactics team as an assault team leader. He received the Director’s Award for Excellence in investigation as a distinguished recipient.