What is NCIS jurisdiction?
The Naval Criminal Investigative Service (NCIS) has primary investigative and counterintelligence jurisdiction within the Department of the Navy. NCIS has a global presence, maintaining a worldwide field structure that supports Navy and Marine Corps requirements in over 140 locations around the globe, including aboard every aircraft carrier and “big-deck” amphibious vessel. NCIS special agents are authorized by law to conduct arrests of military members and civilians alike, both on and off military installations.