| Naics index | Naics index description |
|---|---|
| 561612 | Guard dog services |
| 561612 | Guard services |
| 561612 | Parking security services |
| 561612 | Patrol services, security |
| 561612 | Personal protection services (except security systems services) |
| 561612 | Private police services |
| 561612 | Property protection services (except armored car, security systems) |
| 561612 | Protection services (except armored car, security systems), personal or property |
| 561612 | Protective guard services |
| 561612 | Security guard services |