The NCIS Major Case Response Team (MCRT) is a specialized unit within the Naval Criminal Investigative Service that handles high-profile criminal cases involving the U.S. Navy and Marine Corps. The team is composed of experienced agents and forensic experts who respond to significant incidents, such as homicides, terrorism, and espionage, ensuring thorough investigations. MCRT operates across the United States and internationally, providing support to local law enforcement and military personnel. Their work involves gathering evidence, interviewing witnesses, and collaborating with other agencies to solve complex cases, ultimately aiming to uphold justice and maintain security for military personnel and their families.