Our Services
Our proven processes and attention to detail are just the beginning of your experience with NISS. Our Team of Professionals will ensure every detail is utilized to make your experience second to none!

Investigations
Licensed and Fully Operational in Texas, USA
We have dedicated local support to ensure swift and effective response for all your safety needs
24 hours a day/ 365 days a year.
•Infidelity •Divorce •Child Custody & Abuse •Missing Person(s) •Accident Reconstruction •Personal Injury •Workers’ Compensation
Criminal Investigation Services
•Offender Profiling •Assault •Death •Arson •Fraud •Criminalistics •Burglary & Theft
Security Training
- Level 2-4 Armed/Unarmed Certification
- Personal Protection Certification
Firearms Training
- Loading and unloading firearms safely
- Firing accurately under various conditions and distances
- Reacting to simulated real-world scenarios
- Applying first aid in case of firearm-related injuries
Private investigator Courses
Providing you with the knowledge and skills necessary to pursue a career in private investigation. These courses typically cover a wide range of topics essential for aspiring private investigators, including legal regulations, surveillance techniques, investigative methods, and ethical considerations.
K-9 Services
- Patrol Dog
- Search & Rescue
- Narcotics
- Cadavers
- Bomb & Explosives


Local Support
Licensed and Fully Operational in Texas, USA We have dedicated local support to ensure swift and effective response for all your safety needs 24 hours a day/ 365 days a year.