Crime and Law Enforcement
- NDIC (Department of Justice National Drug Intelligence Center)
- NIH (National Institutes of Health)
- NIMA (National Imagery and Mapping Agency)
- NIMH (National Institute of Mental Health)
- NNSA (United States National Nuclear Security Administration)
- nuclear bomb
- Nucleic Acid Analyzer (HANAA)
- organized crime
- Organized Crime Control Act of 1970
- Parricide
- Pathogen Genomic Sequencing
- Pathogen Transmission
- penitentiary
- perk
- Photo Alteration
- Photographic Resolution
- piracy
- Poaching
- police
- prison