central nervous system 
Center for Nonproliferation Studies 
Clinical Nurse Specialist 
Complementary Network Service 
Complimentary Network Service 
clinical nurse specialists 
communication, navigation, surveillanc… 
Communications, Navigation and Surveil… 
Communications, Navigation, Surveillan… 
Computer Network System 
Computer Networking Subsystem 
Congress of Neurological Surgeons 
Canadian Nuclear Society 
Central Navigation School 
Centre National de Séquençage 
Certified Negotiation Specialist 
Certified Novell Salesperson 
Chief of the Naval Staff 
Cognitive Neuroscience Society 
College Of Natural Sciences 
Communication and Network Services 
Communication, Navigation and Surveill… 
Computing and Network Services 
Continuous Net Settlement 
Corporation for National Service 
Caching Name Server 
Call Nonexistent Subroutine 
Canadian Navigation Society 
Canadian Neurological Scale 
Canadian Neurological Society