Naval Criminal Investigative Service 
National Criminal Intelligence Service 
Nadir Climate Interferometer Spectrome… 
Naval Criminal Investigation Service 
National Center for Information Securi… 
National Chemical Information Symposiu… 
National Chemical Information System 
National Coalition of Independent Scho… 
National Counterintelligence Strategy 
NATO Common Interoperability Standard 
NATO Common Interoperability Standards 
Naval Criminal Intelligence Command 
Navy Cost Information System 
Navy Criminal Investigative Service 
Network Configuration Identifiers 
neuronal cytoplasmic inclusions 
Non-Communications Intercept System 
noncompetitive inhibitors 
North Carolina Information System 
Nuclear Criticality Information System