With all matters of law, you should do your own reading and/or consult a lawyer for advice. I am not a lawyer, so my post here is my personal interpretation only and I make no guarantees that the information is correct or complete.
You can OC anywhere in NV that possession of a firearm is not prohibited by state or federal law.
Some prohibited locations:
- Elementary and Secondary schools (public and private)
- Child care facilities
- Property of the NV System of Higher Education
- Vehicle of a public or private school or child care facility
Note that these are prohibited because there is a general prohibition on possession in these locations. There is nothing in NRS regarding open carry at all.
As for airports and police stations, there is nothing present in NRS prohibiting possession or open carry of firearms in the publicly accessible areas of those locations.