About Fidus Security solutions

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Fidus Security Solutions was founded by retired military and law enforcement professionals who saw firsthand how many critical skills are overlooked in modern policing and protective

service training. Built on experience, discipline, and a commitment to raising standards, Fidus

delivers specialized instruction and support services to officers and agencies across the country.

Our core values—Honor, Integrity, and Courage—are more than words; they’re the expectations we uphold in every class, every service, and every partnership. 

True to our name, FIDUS, meaning loyal and faithful, we stand committed to strengthening those who protect our

communities and ensuring they never face their duties unprepared.

Biography:  Mark Butler, CEO and Co-Founder, Fidus Security Solutions

Mark Butler, CEO and Co-Founder of Fidus Security Solutions, brings more than 35 years of steadfast service to his country and the communities he has sworn to protect. A highly decorated Disabled Veteran of the United States Army, Mark served with distinction in the 4th Infantry Division, 2nd Infantry Division, and the elite 82nd Airborne Division as a Long-Range Reconnaissance Specialist. His military career was defined by grit, discipline, and mission-first leadership. Following his Army service, Mark dedicated 25 additional years to law enforcement as a deputy sheriff, police officer, and sheriff. His work spanned gangs, organized crime, undercover operations, human trafficking, community policing, crisis intervention, and advanced

instruction. Mark has been recognized repeatedly for excellence across multiple disciplines and has led complex operations both nationally and internationally. Together with Co-Founder Don Hoover, Mark established Fidus Security Solutions with a simple

conviction: the nation deserves security professionals who operate with honor and integrity. Today, Fidus stands as a trusted provider of professional security services, shaped by Mark’s lifetime of service, experience, and unwavering commitment to protecting others.

Biography: Donald Hoover

Donald Hoover has spent more than thirty years in the service industry, building a reputation, the old-fashioned way—through hard work, honesty, and a commitment to doing the job right the first time. As the driving force behind a successful HVAC and Class A construction company, he grew Hoover Mechanical into a professionally recognized operation, providing services across multiple states and earning respect for its integrity, craftsmanship, and professionalism. Under Donald’s leadership, Hoover Mechanical became known for dependable work and long-standing customer relationships, a testament to his belief that a man’s word

and workmanship should speak for themselves. His decades of experience in construction, project management, and client service now serve as the foundation for his next chapter.

As co-owner of Fidus Security Solutions, Donald brings the same loyalty, discipline, and attention to detail that defined his construction career. His background gives Fidus a rare blend of technical expertise, operational sense, and a service-first mindset—qualities that strengthen the company’s mission to provide reliable, trustworthy security services. Donald’s professional journey reflects a lifetime of building, solving problems, and standing behind his work. That commitment continues today as he supports the growth and reputation of Fidus Security Solutions.