The Naval Criminal Investigative Service (N.C.I.S.) is responsible for the investigation of all major crimes occurring aboard N.A.S. Fallon properties, whether involving active duty, civilian, and/or contractor personnel. The N.C.I.S. also provides counterintelligence support to all local commands, and is responsible for all liaisons with federal, state, and local agencies with respect to criminal investigative, counterintelligence, and security matters. The N.C.I.S. maintains a fully staffed office, or "Resident Agency", located in Building 427. After working hours emergency requests or referrals should be forwarded through the N.A.S. Fallon Emergency Services (911) Dispatch Center, who will then contact the on-duty N.C.I.S. Special Agent.