National Flight Database 
No Foreign Dissemination 
nodal fault diagnostics 
Norfolk, Franklin and Danville Railway 
IATA code for NOLF Summerdale, Summerd… 
Nacogdoches Fire Department 
Nampa Fire Department 
Nantucket Fire Department 
Naperville Fire Department 
Naples Fire Department 
Nashville Fire Department 
Natchez Fire Department 
Natchitoches Fire Department 
Natick Fire Department 
Naugatuck Fire Department 
Naval Forces Division 
Needham Fire Department 
Neosho Fire Department 
Nephrogenic fibrosing dermopathy 
Neptune Fire Department 
Netcong Fire Department 
Network Flow Diagram 
neurofibrillary degeneration 
Nevada Fire Department 
Neversink Fire Department 
Newark Fire Department 
Newaygo Fire Department 
Newberg Fire Department 
Newburg Fire Department 
Newburgh Fire Department