Texas License: C-11847 | Louisiana License: 7311-011910-LA | Alabama License: 395

Texas License: C-11847 | Louisiana License: 7311-011910-LA | Alabama License: 395

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Private Investigations & Security Training

GSI provides a variety of instruction and courses regarding private investigations, forensic science, security, executive protection, personal defense and handgun licensing/use/safety. These courses are offered to the general public as well as to lawyers, investigation and security professionals.

Mark Gillespie is certified by the Texas Department of Public Safety Regulatory Services Division Private Security Board to award continuing education (CE) credits for Texas PSB licensees and registrants. Mark is also a NRA-certified instructor and former university professor.

Courses Offered

  • So You Want To Be A PI?
  • NRA’s Refuse to Be a Victim
  • Finding Your Niche
  • Homicide Investigations
  • Understanding Forensic Science by the Criminal Defense Team
  • Interviewing Techniques and Affidavit Preparation
  • Handgun, LTC & CHL Training
  • Surveillance Training
  • Crime Scene Investigations
  • Forensic Techniques and Evidence Collection
  • PSB Level III (coming)
  • PSB Level III Firearm Training (coming)
  • PSB Level IV (coming)

A Word from Our Clients

Contact Us

202 Walton Way, Ste 192-157
Cedar Park, TX 78613
(512) 680-5851
info@gillespieinvestigations.com