Provides technical planning and analysis for communication activities including designing, integrating, installing, troubleshooting, repairing, testing, monitoring, reporting, documenting, working with appropriate vendors, and performing preventative maintenance services. NCIS not only has primary responsibility for all criminal investigative, CI, CT, and cyber matters within the DON, but it also has exclusive investigative jurisdiction in non-combat matters involving actual, potential, or suspected criminal, terrorism, sabotage, espionage, and subversive activities.