NCIS Tips provides citizens with a safe and anonymous way to report a crime. NCIS is the civilian federal law enforcement agency uniquely responsible for investigating felony crime, preventing terrorism and protecting secrets for the Navy and Marine Corps. NCIS will defeat threats across the foreign intelligence, terrorist and criminal spectrum by conducting operations and investigatirummy63.comons ashore, afloat, and in cyberspace, in order to protect and preserve the superiority of the Navy and Marine Corps warfighters.