Which agency is responsible for investigating criminal activities within the Navy?

The Naval Criminal Investigative Service (NCIS) is the agency responsible for investigating criminal activities within the Navy. Established to provide law enforcement support and investigative services, NCIS operates not only within the Navy but also for the Marine Corps, ensuring that military personnel and operations are safeguarded from criminal threats. Its mission includes investigating serious crimes, counterintelligence, and counterterrorism activities.

NCIS plays a critical role in making the Navy a safe and secure environment by addressing a wide array of criminal matters ranging from fraud to more severe offenses like assault or drug trafficking within military communities. Its specialized training allows agents to handle incidents uniquely related to military operations and personnel, which distinguishes it from other agencies that may not have the same level of focus on military-related issues.

The other agencies mentioned, such as Naval Operations Command and Naval Security Forces, have distinct roles primarily centered around operational readiness and security, rather than criminal investigation. Similarly, the Navy Intelligence Agency, while focused on intelligence gathering and analysis, is not primarily tasked with criminal investigations, which is the distinct responsibility of NCIS. This specialized focus solidifies NCIS as the correct choice for the agency investigating criminal activities within the Navy.