Instructors

Craig Nordby Craig Nordby first found Sealed Mindset through a close friend in the Federal Bureau of Investigation (FBI). As a graduate of the University of Minnesota, and a former officer in the U.S. Navy, Craig is a protector and defender at his core. As a professional, Craig was a 20-year member of the Emergency Response Unit (ERU). He was a Sniper Team member and then the Supervisor for the last 12 years. Craig was also a member of the combined FBI and Minneapolis SWAT team for 6 years. He was the High Risk Warrant Team Leader for 12 years with his last two years as the Supervisor for the Third Precinct Narcotics and Street Crimes Unit. Craig is a NRA Law Enforcement Firearms Instructor, a graduate of the FBI Sniper School, a graduate of the GVDA Executive Protection and Hostage Rescue School, and a second-degree black belt instructor for Tae Kwon Do.
Beau Doboszenski Beau Doboszenski is a native Minnesotan who is truly a personal security jack-of-all-trades. A lifelong martial artist, he’s trained in Tae Kwon Do, Jujitsu, Aikijutsu, Aikido, Mugairyu, and Kali, to name just a few. A United States Army Airborne Infantry veteran, Beau led initial disaster recovery teams at the Pentagon on 9/11/2001, and walked for two years as a Sentinel and Relief Commander at Arlington Cemetery’s Tomb of the Unknown Soldier. In 2010, after years of trying to work out his “Sealed Mindset” on his own, a chance meeting between Anne Yatch and Beau’s wife, Jessica, led him to the real Sealed Mindset and the last puzzle piece for personal safety.
Jack Pettengill has more than 25 years of martial arts experience and more than 5000 recorded training hours in various street survival tactics. His personal experience ranges from law enforcement to specialized private security to international personal protection (bodyguard) assignments. In addition to his extensive skill in defensive tactics, Mr. Pettengill is recognized as a leading authority in the area of improvised weapons as well as weapon retention techniques. He has published articles and has been recruited to appear in law enforcement instructional videos. To date, he has trained different divisions of law enforcement and the military as well as private citizens. Mr. Pettengill is the co-owner of Dynamic Defensive Arts in Hopkins, MN and is the creator of Encounter Awareness & Defense - an ever evolving, state-of-the-art self defense program that combines all of his experiences.
Jason Massie is the Head Coach and owner of CrossFit SISU in Plymouth Mn. He holds a CrossFit Level 1 Certification as well as certifications in CrossFit Kids, CrossFit Gymnastics, Coaches Prep Course, and CrossFit Endurance. Studying and practicing CrossFit for over three years, Jason has the knowledge and experience to advance the novice as well as the advanced athletes’ work capacity and fitness level based off of the core CrossFit principals of constantly varied, functional movements done at high intensity. Jason’s attention to detail and trained eye will no doubt guide your quest for fitness in a safe and effective manner. Working with Larry Yatch of Sealed Mindset, Jason has developed this defensive functional training class to add strength and power to your defensive tool kit.
John Caile is considered one of Minnesota’s top Carry Permit instructors. He was instrumental in passing the Minnesota Citizens Personal Protection Act – the state’s landmark “shall issue” carry permit law. John has been a professional trainer for more than 35 years, and his high energy style and practical approach will help you understand the exceedingly complex reality of Self-Defense Law.
Timothy Baumann Timothy Baumann came to Sealed Mindset as a father of two who wanted to protect his family. Before joining the Marine Corps, Tim grew up in St. Louis Park, MN. He then traveled to Camp Pendleton, California, Okinawa, Japan, Rockhampton, Australia and Pohang, South Korea during his years of service. After leaving the Marine Corps, Timothy looked for a career where he could put his attention to detail to good use and found Sealed Mindset. As the armorer, Tim maintains and modifies the Sealed Mindset Signature Glocks as well as the Sealed Mindset Signature shotguns and AR-15s for students and members. Working with Larry, Tim has crafted definitive and crisp trigger levels to help students train more efficiently. For more information on the Signature Series or on trigger alterations, please email timothy@sealedmindset.com.
Kurt Brouillet Kurt Brouillet joins the Sealed Mindset team after 20-years of active duty in the United States Marine Corps. Kurt is a consummate professional: he is a certified trainer for the Minnesota State Private Detective and Protective Agent Board, and he has gained valuable U.S. Diplomatic Security experience in Europe and the Far East. His work in the security field and training sectors have honed his skills in asset protection and creative instruction. As an instructor, instructor trainer and chief instructor across the fields of law enforcement, martial arts, survival and mountaineering for the Navy and Marine Corps, Kurt enjoyed a successful military career that culminated in leading his company during Iraqi Freedom. Since his retirement from the Marine Corps, Kurt continues to protect and serve as a federal government security trainer, supervisor, protective agent for local business executives and fortune 500 companies, and as an instructor at Sealed Mindset’s Firearms Studio.
Kyle Loftus came to Sealed Mindset after five years of active duty service with the Marine Corps. He qualified as an Expert, the highest qualification that can be achieved, in both rifle and pistol shooting. In his time as a Marine, he went on two combat tours to Iraq. Kyle held the role of Team Leader over watching the Marines under his command as they conducted an assortment of combat patrols, convoys, and other high risk missions. He was then deployed to Okinawa, Japan where he acted as a Military Policeman. As a Watch Commander, he honed his leadership skills and attention to detail by conducting search and seizures, room entry, and clearings. Kyle was also a trainer for the Marines in various law enforcement courses including technical and tactical training as well as personal development. After a successful enlistment, Kyle searched for and found a place where he could make a difference in the safety of our country from the inside - as a member of the Sealed Mindset team.
Jim Prom’s background is as an emergency medicine EMT. He also has a background in ER invasive cardiovascular intervention. After surviving the LA riots, Jim moved back to MN to invent and sell the Angiogram Sam training models to medical companies and hospitals for training staff and physicians to use interventional technology to achieve better outcomes. Jim whole heartily believes in the Sealed Mindset method of conditional education and enjoys every class he teaches and every member he meets. Jim shines as Sealed Mindset’s Permit to Carry Instructor.
Mike Duffy is a highly athletic 38-year-old Certified Personal Trainer whose world has always revolved around exercise in some capacity. He started training in Tae Kwon Do when he was 18, and later discovered Rick Faye and the Minnesota Kali Group where he learned the Filipino martial art, Kali, the art and philosophy of JKD (Jeet Kune Do), Brazilian Jiu Jitsu, Muay Thai, Wing Chun, Boxing, and Capoeira. Michael came to Sealed Mindset and was instantly attracted to the like minded people that make up the Sealed Mindset team. Known for his practical and unique application of ground defense in Sealed Mindset’s Defensive Fitness classes, Mike has already gained quite a following among members. To attend Mike’s Ground Defense class as a sample class, please email info@sealedmindset.com.
Isaiah Maring was born and raised in Minnesota. He joined the Navy to become a SEAL after 9/11 to serve his country. He spent 5 years at an active SEAL team deploying overseas. The last 3 years of his navel career he was on the Navy Parachute Team doing demonstration parachute jumps in support of Navel Special Warfare recruiting across the U.S. During that time was one of the lead jumpers in the movie Act of Valor. He is now the facility Manager at Sealed Mindset and also does demonstrations parachute jumps with his team CRW DEMOS Inc all around the country.