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About Us

Founded in 2017, Granite Defense Technologies LLC (GDT) is a leader in advanced technology solutions, specializing in robotics for public safety, critical infrastructure, and emergency response. Our headquarters is located on a 1,400-acre ranch just 65 miles northwest of Austin, Texas. This unique facility serves as a premier testing and evaluation site for air, ground, and water robots. It includes specialized scenario-based environments that allow us to rigorously test and demonstrate the technologies we sell and support under real-world conditions.

Our Services

Expert
Consulting

We assist clients in achieving outcome-based integrated solutions. Our ability to test and evaluate via a fully instrumented NIST (National Institute of Standards and Technology) Robotics testing platform, as well as many real-world scenario features, is unique to GDT. Emerging Technologies keep us on the forefront of new solutions, ensuring we deliver innovative and adaptive approaches to meet evolving operational challenges.


Product Sales

We focus on Robotics, Communication, Analytic, and Monitoring tools that are in harmony with the United States National Interest. These products are evaluated and tested at our HQ in Burnet, Texas to validate their capabilities an inform our process. We welcome clients to join us at the Ranch to see the technologies in action.

Scenario-Based
Training

We offer a host of Training opportunities at our 1,400-acre HQ facility which  features realistic training areas, including disaster simulations, small bridges, towers, and confined spaces as well as fully instrumented National Institute of Standards and Technologies, Response robot test suites.

Ongoing Support

Our dedicated team offers maintenance, troubleshooting, software updates, and performance optimization to keep technologies operating at peak performance. By partnering with Granite Defense & Technologies, clients gain access to expert technical assistance, training programs, and continuous system enhancements, ensuring their solutions remain effective and future-ready.

Contact us

Team

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Tom Prentice

CEO / Co-Founder

Tom is a seasoned leader and innovator in the field of advanced technology solutions, with over 30 years of experience providing cutting-edge technologies to Fortune 500 companies, as well as state, local, and educational markets. As the CEO and Co-Founder of Granite Defense & Technologies LLC, Tom has been at the forefront of integrating robotics, communication, and analytics to enhance public safety and emergency response. Under Tom's leadership, Granite Defense has become a trusted partner to public safety agencies, critical infrastructure providers, and emergency responders. The company’s state-of-the-art headquarters at Reveille Proving Grounds—a 1,400-acre facility northwest of Austin, Texas—serves as a unique hub for evaluating and testing robotics technologies in air, ground, and water environments. Tom has driven innovation in areas like Drone as a First Responder (DFR) systems, Counter UAS technologies, and NIST-standardized robotics testing. A champion for collaboration and advancement, Tom is deeply involved with the NIST Response Robot Group and other industry working groups, helping to shape standards and best practices for the deployment of life-saving robotics. With a passion for leveraging technology to solve real-world problems, Tom  continues to drive Granite Defense’s mission of enhancing public safety through innovation and expertise.

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Hayden Prentice

COO

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Matt Murski

Sr. Account Executive

Matt Murski is a highly accomplished sales executive with 8 years of experience in driving revenue growth.  His extensive 16-year career in the video capture and management industry encompasses a broad range of technologies, including unmanned aerial systems (UAS), in-car video, body-worn cameras, video management systems (VMS).  This expertise is complemented by his 25-year career in law enforcement (retired), where he gained invaluable experience in fleet management (8 years) and VMS administration (5 years).  Matt's unique blend of sales acumen, technical proficiency, and deep understanding of law enforcement needs makes him a highly valuable asset in the technology sector.

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Preston Culver

Strategic Advisor

Former firefighter, lead drone pilot & videographer for the Austin Fire Department, Preston Culver has taken his experience flying drones on emergency scenes and now works on the Standard Test Methods Response Robots project at NIST (National Institute of Standards and Technology) via an adjunct research position at Johns Hopkins University. Alongside other former first responder drone pilots and UAS program managers, as well as engineers, academics, current first responders and more, this project focuses on standardizing the test measures utilized in testing both pilots & technologies, geared specifically for emergency response. Preston has also been a driving force behind the annual TXPSROBOTS show.  From marketing duties to training curriculum to being the MC, you'll see Preston all over the Ranch throughout the week of the Summit.

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Clay Regan

Training Coordinator

With a remarkable 34-year law enforcement career and 26 years in the U.S. Air Force as a Chief Master Sergeant, Clay Regan brings unparalleled expertise and leadership to the Public Safety Unmanned Systems Academy (PSUSA). As a pioneering force in public safety UAS program development, Clay’s experience includes founding critical UAS programs for multiple police departments and contributing to significant deployments, including the Hurricane Harvey response as an original member of the North Texas Public Safety UAS Response Team (PSURT). Currently serving as the UAS Program Coordinator with the Ellis County Sheriff’s Office and as the Senior National Instructor for MITRE Corp’s SOAR Program, Clay has trained hundreds of public safety, emergency management, and conservation professionals, making him a national authority in UAS operations and safety. His strategic vision and hands-on approach to UAS program building, combined with his deep commitment to service, uniquely position PSUSA as the foremost choice for reliable, comprehensive UAS training. Choose PSUSA and benefit from Clay’s extensive real-world experience, ensuring your team’s skills, safety, and success in the field.

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© 2025 Granite Defense Technologies. Created by Pense Design on Wix Studio.

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Tel. 512-588-4045
1610 County Road 115
Burnet, TX 78611

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