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Surveillance Training Academy

Surveillance Specialty Group (SSG) is a private investigative firm which is designed to be a full service one stop investigative firm. SSG has developed limited non share holder partnerships in video surveillance and security, video product line equipment and installation, forensic accounting, fire arms and concealed handgun license instructor, experienced and proven criminal investigators, proven and professionally trained surveillance specialists to provide covert physical surveillances, pre-employment background searches, and a process serving network of experienced and certified group of individuals.

Surveillance Specialty Group

SSG vision is to provide a diversified one stop investigative/surveillance and surveillance training tool in the Law Enforcement, security and investigative profession.

SSG is broken down into Divisions with one Division exclusively dedicated to a hands-on surveillance training and is titled, Surveillance Specialty Group's, "Surveillance Training Academy". This Division of SSG is coordinated by Joe Glad and is a training specific opportunity targeted for County, State and Federal Law Enforcement employees, County, State and Federal Law Enforcement candidates, candidates for private investigation work, corporate security operations, corporate employees & their spouses whom are scheduled for overseas assignments, security guard companies, personal armed body guard protection employees, investigative reporters and their undercover surveillance teams, Law Enforcement Colleges as a Continuing Education Course, and any other company with assets in need of protection or a need to have professionally trained employees to observe and protect the company assets and their most valuable asset, it's employees.


In Memoriam
Horst Drewniok
November 13, 1946 - April 26, 2013

Horst Drewniok

It is with deep sadness that we lost our friend, esteemed colleague, and partner, who lost his courageous battle with leukemia. Horst is survived by his father, Max Drewniok, wife Sally, and children Diana Bourgeois and husband Danny, and Eric Drewniok and wife Kristin, and grandchildren Daniel Bourgeois, Shane Bourgeois, Kaitlyn Drewniok, and Tyler Drewniok.

Horst retired from the FBI in 2003 after 35 years of service to his Country. While he was born in Salzgitter, Germany, he grew up and was raised in the United States of America. A true patriot!

In 2011, Horst joined up with Charles Marler, Penrod Harris, and Joe Glad, to create a business venture, now Surveillance Specialty Group (SSG), to train law enforcement personnel and prospective law enforcement candidates. Horst‘s greatest attribute to the SSG was his extensive overseas travel which consistently put him on the front lines of intelligence collection and experience at being surveilled by hostile government entities and rogue individuals. Horst brought all this experience and knowledge to the SSG classroom and his wittiness and stories will be greatly missed.

On a personal level, Charles, Penrod, and Joe, all had the privilege of working directly for Horst in a counterintelligence unit for the FBI and we can say with pride that Horst was one of the greatest mentors in the Bureau. But more than that, Horst was a great and caring person. He will always have our utmost respect and admiration.

Horst was a warm, gentle, and humble person who always had a smile for everyone. He loved interacting with people from all walks of life and was proud to be a civil servant for 35 years. He was devoted to both is his Country, and his family, and he will be sorely missed by everyone who knew him.


Ronald Wayne Alexander "Ronnie": Ronnie is former Infantry Marine with combat experience, honorably discharged, with prior assignments as an anti-tank assault man with 3rd BN 8th Marines, and 1st BN 8th Marines, and 2nd BN Reconnaissance, with the 2nd Marine Division. After military service Ronnie, attended Texas A&M University Kingsville, with an emphasis in Criminal Psychology.

Attended and graduated from Southeast Texas Regional Police Academy in Corpus Christi, Texas. (1992). He began law enforcement career with Kleberg County Constable’s Office. Full time career starting in Harris County Pct. 3 and the County Attorney’s Office as a Sr. Investigator. Continued career in Liberty and Chambers Counties working with Southeast Texas Narcotics Multi-agency Task Force. Currently employed as a Supervisor with the Liberty County Sheriff’s Office in the Special Crimes and Narcotics Division.

Ronnie has over fifteen years of extensive experience working undercover and organized crime operations with Federal, State, and local agencies. DPS/CLE certified in Narcotics and Organized Crime investigations, involving operational planning and execution, confidential source development and management, surveillance and counter-surveillance methods, high risk warrants operations, search and arrest warrant preparation and execution. (1996-Present) Ronnie’s value to the SSG’s Surveillance Training Academy cannot be exaggerated as he has abundant operational experience in the Middle East as an OGA/DOD/DOS senior advisor working counter surveillance, anti-kidnapping, poppy eradication, close protection, convoy security operations, tactical questioning, tactical site exploitation, counter insurgency methodology, and counter IED cell interdiction. Assigned as Dignitary Protection team lead in Afghanistan for Department of State, senior advisor to the U.S. Marine Corps in Afghanistan Department of Defense, team lead for DOS poppy eradication in Afghanistan working with SOF units and DEA. Additional operational experience in the Middle East working OGA in surveillance and kidnapping counter measures. (2007-2012)


Key Instructors for the SSG Training classes are:


Cristina Dominguez: 5 yrs FBI, 2003 through 2008

Cristina Dominguez graduated from Sam Houston State University with a BA in Criminal Justice then immediately gained employment with the Department of Defense (DOD), Defense Security Service (DSS) as a Criminal Investigator/Special Agent. Her duties were to conduct background investigations for the DOD as well as for companies with Top Secret Government defense contracts such as Halliburton and Boeing, to name a few. Cristina conducted interviews with known and unknown references, processed record checks and prepared detailed Reports of Investigations (ROI's), which were used in the adjudication process.

In 2003 she was hired by the FBI as an investigative specialist in the FBI's covert Special Surveillance Group where she learned all facets of the Bureau's complex operations from covert physical surveillance, evidence collection, radio communications, aviation surveillance and the multifaceted and intricate Forward Looking Infra-Red (FLIR) camera systems. As a member of the Bureau's Special Surveillance Group, she participated in and completed hundreds of covert physical surveillance operations on drug, foreign counterintelligence, and suspected terrorist targets. She participated in joint training operations with DEA and CIA where she was instrumental for the FBI's surveillance training programs with regard to teaching CIA and DEA operatives on how to successfully survey their targets without being detected.

In 2008, after giving birth to her daughter, Cristina left the FBI to pursue another career as an independent contractor which allowed a more flexible schedule during her child rearing years.

Since 2011, Cristina returned to the work force as a Private Investigator in Texas. She has devoted her time and expertise to contribute to all training level courses for the Surveillance Specialty Group, as well as the Kidnap Awareness and Surveillance Detection specialized training.


Penrod Grant Harris: 34 yrs FBI, 1973 through 2007

Penrod Harris has a wife and two daughters. He was raised in Corpus Christi and has happily found his way back there. He was employed by the Federal Bureau of Investigation for thirty-four plus years (1973-2007) and headquartered throughout his entire career in the Houston, Texas, Division. The last twenty plus years of his career were spent as a part of the Special Surveillance Group (SSG) with the last ten plus years as Supervisory Investigative Specialist running the day-to-day street operations of a surveillance team focused on counterintelligence and counterterrorism matters. During his time with the SSG program, he worked not only within the Houston Division, but throughout the nation from coast to coast and border to border and frequently handling multiple teams during complex and sensitive investigations. Penrod has been the recipient of extensive training regarding surveillances ranging from basic surveillance to cross training with other national intelligence agencies, as well as friendly foreign intelligence agencies. He also served as Instructor/Evaluator for FBI surveillance training classes conducted in the Washington, D.C. area.


SSG - Tom Barton

Thomas G. Barton (Tom) is a retired FBI Special Agent with 22 years of criminal and counter-intelligence work experience both as an investigative and a technically trained agent. He graduated from the United States Military Academy (1978) and served as an Airborne/Ranger qualified Infantry officer in the US and Europe.

As an FBI agent, Tom's experience included investigating violent crimes, drug trafficking and public corruption. As a technically trained agent he provided case agents with telephone intercept, covert vehicle tracking, camera and microphone installation, as well as other services. Tom was deployed to Iraq in 2006 to provide technical support for the multinational task force where he worked with the Iraqi National Police Force. He is also a Bureau certified firearms and sniper instructor and has taught at both the state and local level, as well as at the FBI Academy in Quantico, VA.

Since retirement Tom has provided instructor services for a DOD/DIA training firm specializing in technical and personal skills for personnel scheduled for overseas deployment. He currently works as a firearms instructor qualifying airline pilots for concealed carry through the Federal Air Marshals program.


SSG - Phil Taylor

Phil Taylor is a retired Special Agent of the Federal Bureau of Investigation with 27 years of Investigative and technical experience in a large field division office. As a Special Agent, Phil has investigated bank fraud, bank robberies, violent crimes and domestic terrorism. Phil spent 2 years as an undercover operative where he successfully thwarted the efforts of a heavy equipment theft ring.

Phil's last 12 years with the FBI were spent as a technically trained agent where he was involved in clandestine camera and tracking device installations, as well as the Regional Cellular Tracking Coordinator. After gaining several years of technical experience in all aspects of the technical arena, Phil often traveled to the FBI Academy located at Quantico, Virginia and taught various classes for the training division. Eventually Phil returned to Quantico monthly to proctor new Technically Trained Agents in their certification classes.

One of Phil's ancillary duties was a firearms instructor for 15 years. This involved the training and certification of the rank and file Special Agents in their quarterly qualifications to carry and use several different firearms.


SSG - Dirk Suter

Dirk Suter joined the Houston Police Department in 1990. In 1995 he was assigned to the Homicide Division. Most of his time in the division was spent assigned to the Domestic Violence Unit. During this time he received an M.B.A. in management from the University of St. Thomas. In 1999 he joined Wells Fargo Banks investigations unit as a Senior Investigator investigating bank fraud. In 2000 he joined Reliant Energy, Inc. as a Security Coordinator investigating fraud. In 2004 Dirk moved to Yellow Roadway as a Security Investigator where he gained extensive experience conducting surveillance and investigating workman compensation fraud. But in 2005 he returned to Reliant Energy when he was offered the position as Security Manager. Dirk has investigated theft, credit card fraud, check fraud, loan fraud, customer take overs, embezzlement, and commercial bribery throughout his private sector career. He serves on the board of InfraGard Houston and is a member of the Fraud Investigators Association of Texas.


SSG - Russ Weaver

Russ Weaver: 30 years Houston Police Department

Russ's assignments were in the Patrol, Jail, Special Operations, Planning/Crime Analysis and Criminal Intelligence Divisions. While assigned to the Criminal Intelligence Division, he was chosen as a member of the FBI Houston Division's Joint Terrorism Task Force (JTTF) where he served for the last 20 years of his service.

As one of the original Houston JTTF members, his assignments included criminal investigations in addition to sensitive national security and international terrorism investigations. The investigations included overt and covert operations in addition to assisting in undercover operations. Russ was tasked with cultivating sources and developing practical solutions to difficult problems as well as surveillance and counter-surveillance techniques.

Prior to Houston Police Department, Russ also worked with the Texas Department of Criminal Justice and the Harris County Sheriff's Office.


SSG - Bernard Aguirre

Bernard Aguirre

Biography: Director of Operations

Bernard is accountable for organizing and overseeing daily security operations, training and supervising security officers, performing security consulting and implementing standard policies and procedures. Bernard retired honorable as a sergeant after a successful carrier of 30 years with the Houston Police Department (HPD), where he held numerous leadership positions. He had been trained and assigned over the years to different divisions within the Houston Police Department, accumulating extensive experience in identifying and developing differential responses to crimes, solving community issues, working and interacting effectively with people at many levels, emergency response planning, riot control and dignitary protection. Bernard graduated from The Houston Police Academy, College of DuPage and Houston Community College.


SSG - Roland Aguirre

Roland Aguirre

Biography: Director of Investigations

Roland is responsible for planning and supervising the day-to-day operations of investigation teams, training investigation personnel, designating cases, reviewing and evaluating reports as well as implementing investigation processes and policies. He has been a private investigator for the past thirteen years, worked many investigative cases such as murders, accidental death, re-construction of motor vehicle accidents, copy-right infringement surveillance and child custody cases. He has conducted raids on counterfeit products and worked with companies finding missing assets and misappropriations of funds that dealt with accounting and finance practices. Prior to becoming a private investigator and joining Main Security and Investigations, Roland held different management positions for loss prevention measures and inventory control at large retail corporations. Roland has a Bachelor’s of Arts degree in Business Finance and a minor in Mathematics from Texas A&M University.


SSG - Nicole Malak

Nicole Malak

Biography: President and Founder of Main Security and Investigations.

Oversees the operations and financial aspects of the company focusing on leadership and excellence in customer service. Worked for the past decade in an administrative position in the private security sector building on that to develop her own vision, where former Federal and Law State enforcement officers can be drawn into the Private Security sector, delivering high security services to a large variety of businesses in our community making the services available and affordable to all. Nicole has a Bachelor’s of Arts degree in Social Work and a Master’s of Arts in Media Communications.


Bryan Vaclavik, worked 18 yrs for the Harris

County District Attorneys Office in the Major Fraud and White Collar Crime Sections. Vaclavik provided litigation support and the tracing and recovery of assets lost to misapplication and is a Certified Fraud Examiner.


Robert McDonald, Certified CHL Instructor

With 30 years of FBI experience and firearms training. McDonald is offering classes for those interested in obtaining a CHL.


SSG - David Webber

David Webber

David grew up in Houston, attended school, and raised his family in the area. After finishing High School, David joined the Houston Police Department and became one of the youngest cadets at age 19. Having two brothers on the department and a father who was a former Galveston Police Officer gave incentive and purpose to a career that was similar to a law enforcement bloodline.

After graduating from the Houston Police Academy in 1980, David worked in Patrol, and later in 1986 transferred to the Southeast Tactical Division. This unit handled a wide variety of tasks, which included undercover narcotic purchases, surveillance both moving and stationary, monitoring crime activity in a localized geographical area, vice investigations both street prostitution and sexually oriented businesses, and a wide variety of other undercover duties. Taking advanced surveillance classes helped hone in the skills for a successful investigation and officer safety. David later transferred to the Narcotics Division and worked there for two years before returning back to patrol. David joined the Northwest Division Tactical unit in the mid 1990's and worked undercover solving hundreds of crimes, including theft, burglary, robbery, auto theft, and many vice related crimes. David was responsible for setting up, coordinating, and actually working a two day undercover sting operation that netted over 200 illegal aliens violating a wide range of crimes. David then retired from the Houston Police Department in 2000. David Joined the Cut and Shoot, Texas Police Department and worked patrol for 11 years.

David has been a licensed Private Investigator since October 2014 and has worked many investigations, including but not limited to child custody, infidelity, theft, personal protection, and many other details. David believes in doing the right thing by treating others in a respectful and caring manner. Always take pride in your work because it is a reflection of your character. You never know when you may be on the other side of the fence needing help.

We have teamed with Main Security and Investigations, in our endeavor to supply a wide range of clients with customized integrated security solutions. Whether you need Armed and Unarmed Security Guards, Off-Duty/Retired Police Officers, Patrol Services, Video Surveillance Equipment installation and maintenance, Fire alarm installation, Monitoring Services, Consulting and Risk Assessment, or Special Event Security and Personal Protection, our common goal is to provide you with a broad team of experts in security, surveillance and investigation fields to ensure your security objectives and investigative assignments are well taken care of


SSG - Kenny Rodgers

Kenny Rodgers

Biography: Managing Partners Professional Biographies.

- 30 years Harris County District Attorney's Office/Investigations

He has served over 33 years as an investigator for the Harris County District Attorney's Office where he advanced to the position of Chief of Investigators supervising over 56 investigators. During his tenure at the District Attorney's Office he was in charge of thousands of investigations and personally responsible for hundreds of felony arrests and prosecutions. He spent 12 years as the lead investigator of the electronic surveillance detail of the Special Crimes Bureau.

Kenny was a key player in the design and implementation of the art technology now used by the county civil and criminal database systems. He served as an analyst in the development of the current Justice Information Management System (JIMS), and used by private citizens, lawyers and law enforcement throughout Texas. Kenny was instrumental in establishing the Automated Fingerprint Identification System (AFIS) for Harris County which automated the taking and verifying fingerprints on individuals, which has proven itself as the key law enforcement tool to identify (without a doubt) individuals when apprehended.

Other achievements include the design and development of the District Attorney's Office Intake Management System (DIMS) which is used by over 125 law enforcement agencies to file criminal charges against persons suspected of criminal activities. He was instrumental in the development of the systems (GRITS) Gang Related Information Tracking System, as well as the Harris County Sex Offender data management system.

Kenny is also a graduate of the FBI National Academy (158th Session) and the National Intelligence Academy. He serves on the Board of Directors for the Harris County Federal Credit Union and serves as their security director. In 1983, Kenny was recognized with an award proclaiming him as "Officer of the Year" by the 100 Club of Houston for his outstanding work in law enforcement.

Kenny is currently licensed and certified by the Texas Commission on Law Enforcement Officer Standards and Education as a Master Peace Officer and Instructor.


SSG - Joe Glad

Joseph M. Glad: FBI March 1982 through March 2012

Surveillance Specialty Group is led by Joe Glad. Joe is a highly trained and experienced manager of a covert physical surveillance entity, including assignment as a surveillance National and Regional Response Coordinator. He has been responsible for all aspects of surveillance operations from planning through execution, as well as being responsible for collection, analysis and dissemination of intelligence gathered during secret operations. Joe has strong qualifications in surveillance reporting and performance appraisals of employees. He has been instrumental in a number of innovative and cutting-edge initiatives while working closely with executive managers of the FBI at FBI Headquarters in Washington DC. He ensured subordinates had and continued to receive necessary training in the most up-to-date tradecraft and technology. He followed employee progress and training needs throughout their career.

As a surveillance Coordinator, from 1993 to 2008, Joe was responsible for a large pool of a mobile surveillance personnel and a mid-size group of static surveillance personnel. He supervised both the static and mobile surveillance programs as one combined squad for over two years. He worked in this type of fast-paced, high volume operational environment for 16 years.

Joe developed and implemented numerous technical, operational and training manuals involving the surveillance trade. The manuals are designed to assist the surveillance employee with writing documents, vouchers, travel request forms, security awareness issues, cover stories, and building security. Some of the manuals have been designated as prototypes and are used by all other FBI Divisions.

Joe recently retired from the FBI to join fellow retirees in the formulation of the Surveillance Specialty Group Surveillance Training Academy.

  • SSG - Joe Glad
  • SSG - Joe Glad
  • SSG - Joe Glad
  • SSG - Joe Glad
  • SSG - Joe Glad
  • SSG - Joe Glad


SSG - Charles Marler

Charles Marler

FBI March 1992 through March 2008

Charles worked for the FBI for 16 years learning all facets of the Bureau's complex operations from evidence collection, radio communications, aviation surveillance, and Forward Looking Infra-Red (FLIR). Charles was an Investigative Specialist for 12 years as a member of the Special Surveillance Group and conducted, organized and completed thousands of surveillances on Drug (as FLIR operator), Intelligence and Terrorism targets. He participated in joint training operations with the DIA, DEA, JCTA and CIA. Charles was an instructor and evaluator numerous times for the FBI's surveillance training programs.

Charles managed a number of FLIR System Operators while coordinating one of the FBI's prominent FLIR programs. He provided case guidance, became an expert in the operation and maintenance of FLIR equipment, and personally trained or provided training for his operators. Under Charles leadership and guidance the FLIR program conducted numerous successful operations against espionage subjects, suspected terrorism subjects, drug shipments, violent crime, and kidnap searches.

Since 2008, Charles has been a co-owner of a private investigative firm based in Houston and has worked as a Private Investigator in Texas for the past four years which specializes in covert physical surveillance operations. As a P.I. he has performed criminal investigations and conducted surveillance operations involving workman's compensation, child custody, drug use, theft, and the elusive but frequent cheating spouse.

Training Courses


Class Hours - Level I

8 Hour Basic Surveillance Training “Unclassified”
  • Lead Instructor: Joseph M. Glad
  • Time:
  • Office: West 11th Street Houston, Texas 77008
  • Phone: 832-584-3719
  • Email:
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Class Hours - Level II

24 Hour Intermediate Surveillance Training “Unclassified”
  • Lead Instructor: Joseph M. Glad
  • Time:
  • Office: West 11th Street Houston, Texas 77008
  • Phone: 832-584-3719
  • Email:
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Class Hours - Level III

40 Hour Advanced Surveillance Techniques “Unclassified”
  • Lead Instructor: Joseph M. Glad
  • Time:
  • Office: West 11th Street Houston, Texas 77008
  • Phone: 832-584-3719
  • Email:
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Class Hours - Level IV

24 Hour Intermediate Surveillance Training “Unclassified”
  • Lead Instructor: Joseph M. Glad
  • Time:
  • Office: West 11th Street Houston, Texas 77008
  • Phone: 832-584-3719
  • Email:
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