Granite Investigative Solutions, LLC
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About Brian Alvarez, Retired FBI Polygraph Examiner.

Experience Counts!

  • Granite Investigative Solutions, LLC was founded by Brian Alvarez, after a lifelong career (35 years) dedicated to public service as a California Law Enforcement professional and as a FBI Special Agent/Supervisor who has managed complex and challenging threats and investigations to the security of our national and local interests. 


  • Upon retirement after 24 years as a FBI Special Agent/Supervisor, Mr. Alvarez has a proven record, investigative experience, and expertise related to domestic and international operations with Federal, state, and local law enforcement. 


  • Mr. Alvarez' experience is diverse and specialized such as; violent crimes, transnational  gangs, major drug trafficking organizations, kidnappings, bank robberies, interstate thefts, crimes against children, undercover operations, Joint Terrorism Task Force Coordinator (JTTF), international/domestic terrorism, bomb technician/explosives (assigned  to Afghanistan on a Counter IED Task Force with US Military), SWAT team leader, Major Special Events, Sports Rep/Liaison, SWAT EMT, Crisis Management, Active Shooter/Threat Assessments, Critical Incident Response,  and ended his career the last 10 years as a FBI Polygraph Examiner where he consistently demonstrated high work performance and received several accommodations for his expertise.    


  • Prior to be recruited to the FBI, Mr. Alvarez had an exceptional career as a deputy, detective, and patrol watch commander for the San Bernardino Co. Sheriff's Department for 11 years. 




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