What agency does NCIS refer to?

The correct agency referred to by NCIS is indeed the Naval Criminal Investigative Service. This agency is a crucial component of the U.S. Navy and Marine Corps, tasked with investigating and preventing crimes that affect navy personnel and facilities. It handles various investigations, including those related to theft, fraud, and counterterrorism, ensuring security and justice within the naval community.

The designation "Naval Criminal Investigative Service" reflects its primary function, which is to conduct criminal investigations and provide counterintelligence services. This designation also emphasizes its role as a law enforcement agency that supports both military and civilian authorities, thereby playing a key role in maintaining safety and integrity within naval operations.

Understanding the precise definition and function of NCIS is integral for those studying security practices, as it exemplifies how military branches manage crime prevention and investigation, contributing to overall national defense and security.