Leadership

Guiding Forces

The Grey Group leadership team is a collective of visionaries, each contributing a wealth of experience and expertise in security, training, and strategic solutions. Get to know the architects of our legacy, as they lead Grey Group into the future, setting the standard for innovation, reliability, and unparalleled service in the realms of security and tactical training.

Shea Degan, a native of Omaha, Nebraska, studied Criminal Justice at the University of Nebraska at Omaha and served in the United States Coast Guard Reserves.

Following his time in the Coast Guard, Degan spent 23 years in law enforcement serving with the Douglas County Sheriff’s Office and another local police agency. During his career he worked as a road patrol deputy and later as a K9 handler in the Narcotics Criminal Interdiction Unit before retiring from law enforcement. His work focused on proactive interdiction, criminal investigations, and operational policing.

In addition to his law enforcement career, Degan is an entrepreneur who has founded and built multiple companies, including a national and international security services brand that expanded to more than 370 franchise locations across the United States and in three other countries. His experience includes building scalable service businesses, franchising operations, and developing companies in both the security and technology sectors.

Degan has also spent more than two decades training in Mixed Martial Arts and Brazilian Jiu Jitsu and has been involved in teaching and mentoring others in those disciplines.

Trevor Thrasher was born into a military family and raised in Bellevue, Nebraska — the son of a fighter pilot who flew combat missions in Vietnam. He would go on to build one of the most operationally diverse careers in the training industry.

Trevor served 30 years in the U.S. Army, 20 of them as a Special Forces Green Beret with combat deployments with both 3rd and 19th Special Forces Groups. Simultaneously, he built a parallel career in law enforcement spanning more than 30 years — 15 of those full-time across two agencies, working patrol, street crimes, SWAT, and as an academy instructor. He continues to serve as a fully certified law enforcement officer today.

Between those two careers, Trevor spent more than a decade conducting high-risk, high-consequence counter-terrorism missions overseas for a U.S. government agency — work that demanded the full integration of his military and law enforcement skill sets.

He has also worked in the field of executive protection, adding principal protection in both permissive and non-permissive environments to his experience.

Trevor is a court-certified expert witness in use of force and self-defense, and the architect of the High Threat Systems and Reality Behavior-Based Conditioning© curriculum.

That breadth of front-line experience — across special operations, law enforcement, government service, and the courtroom — drives Grey Group’s singular mission: building better decision-makers and tacticians who better serve their communities.

Aaron Guzman, a retired law enforcement professional with an 18-year dedication to service in Minnesota, brings a wealth of knowledge and expertise across various facets of law enforcement. He is currently a reserved deputy in Tennesse. His extensive career is marked by notable achievements and roles. Possessing instructor ratings in Firearms, Combatives, Close Quarters Battle (CQB), Active Killer Response, Safariland Less Lethal/Chemical, and Field Training Officer, Aaron served as the range master for his agency, showcasing his commitment to training and skill development.

For twelve years, Aaron served in a multi-jurisdictional S.W.A.T. team as the Assistant Commander, where he played a crucial role in coordinating operations and ensuring the team’s effectiveness. His specialized skills included breaching, high-threat close quarters combat (CQC), less lethal/chemical/distraction device operations, and he also took on responsibilities as a training coordinator and team leader.

In his role as Directory of Training, he oversees the growth of all training programs and contributes to the expansion of Grey Group’s training curriculum to new locations across the United States. Aaron’s comprehensive experience, coupled with his leadership and administrative skills, makes him an invaluable asset to the organization.