Consult with the user community to resolve technical problems and answer queries by telephone or self-service ticket in support of internal and/or outside customer computer hardware, software, network, system/application access, and telecommunications systems. 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.