<p>On October 23, 1983, the Marine Barracks in Beirut Lebanon was attacked by a truck driven by a suicide bomber.  NIS Special Agent Grant McIntosh responds from the USS Iwo Jima to take charge of a crime scene and begin investigative work on a day that would change his life forever.</p>

On October 23, 1983, the Marine Barracks in Beirut Lebanon was attacked by a truck driven by a suicide bomber. NIS Special Agent Grant McIntosh responds from the USS Iwo Jima to take charge of a crime scene and begin investigative work on a day that would change his life forever.

<p>On October 23, 1983, the Marine Barracks in Beirut Lebanon was attacked by a truck driven by a suicide bomber. &nbsp;NIS Special Agent Grant McIntosh responds from the USS Iwo Jima to take charge of a crime scene and begin investigative work on a day that would change his life forever.</p>

INVESTIGATIVE ACTION: Special Agent Grant McIntosh and the Marine Corps Barracks Bombing in 1983

The legends of ONI/NIS and today’s NCIS talk about their careers and the cases that impacted their lives and haunt their memories.

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INVESTIGATIVE ACTION: Special Agent Grant McIntosh and the Marine Corps Barracks Bombing in 1983

INVESTIGATIVE ACTION: Special Agent Grant McIntosh and the Marine Corps Barracks Bombing in 1983