Guest Instructors at Range Martial Arts East

Sometimes instructors from other schools come to visit and lead classes for our students. Whenever possible, guest instructors will be announced prior to their time with us via Facebook, Twitter, and this site. In addition to the announcement, we will try and provide some information here about them as well! Some of the instructors from the Chisholm location may also stop by from time to time. Their information can be found on the Range Martial Arts instructors page.

Scheduled Guests

Mr. Michael Grothe

Michael Grothe is the chief instructor of Martial Arts Academy of Tang Soo Do - MN in Circle Pines, MN. He also runs MAATSD MN - HERO in Forest Lake, MN. Mr. Grothe is a 3rd degree black belt and Masters Candidate in the World Tang Soo Do Assoc., where he trained under Master Robert Grissom. Mr. Grothe is a Level 3 Qi Gong instructor and has also trained in Tai Chi, Hapkido, Wing Chun, and boxing. Mr Grothe has a love for forms and his specialty is kicking, stretching, and aggravatingly small details within forms and basics.

Mr. Sam Wilkes

Mr. Wilkes is a Level 4 Ki Gong teachers at Range Martial Arts. Before getting involved with Ki Gong, Mr. Wilkes was a certified coach and referee as part of the United States Judo Association. He taught a local program as a black belt (nidan) instructor. He has since retired, but comes to our school from time to time to help us with falling, rolling, and throwing skills. His sessions are informative, fun, and can get students doing things they never thought they would attempt otherwise.

When asked to provide some information, Sam replied only in the way that he can: I was recently referred to as “Mr. Handsome“ by a Maori lady in New Zealand. I’m over weight, and have a heart issue, with joint pain daily! Beth & I live in the woods, with one noisy cat, & one kinda nice cat, because we don’t like being around too many people for very long. Retired teacher/administrator. Have taught self defense classes to both normal & insane people, including politicians. Enjoy long walks on the beach, and candlelight dinners.

Guest Instructors

Sabumnim Greg Blum

Sabumnim Greg Blum began training Tang Soo Do under Master Gary Josefik in 1984, earning his cho dan (1st degree) in 1988. He has trained in multiple regions in the WTSDA, including 8, 9, 22 and now currently residing Cedar Rapids, IA in Region 3. While he considers Master Josefik as his official instructor, he feels blessed to have worked with many masters and instructors as he has moved around. He eventually earned his Sah Dan rank in 2011 and was recently promoted to Oh Dan.

Master Robert Frankovich

Master Robert Frankovich is a Chisholm native that owns White Tiger Martial Arts in the metro and east central areas of Minnesota. He is a Taekwondo 7th dan master and a 4th dan master in Haidong Gumdo. "Master F" is responsible for Master Koivisto's Haidong Gumdo training and occassionally comes to visit our school for various sessions. He has a long list of experience and achievements including: Recognized 6th Dan representative of the Kido Kwan, PanAm Mulimpia Organizing Committee Vice President, Bruce Lee & Legends Hall of Honor Inductee, U.S.A. Martial Arts Hall Of Fame Inductee, United States National Martial Arts Alliance State Co-representative (Minnesota), U.S.A. Martial Arts Hall Of Fame Inductee – Korean Martial Arts Master of the Year 2014, World Haidong Gumdo Federation's World Championships Assistant Coach for USA Team, and many more! His sessions are always filled with knowledge presented in a way to get you to think and analyze for yourself - an important part of developing yourself as a martial artist!

Master Lee Mattox

Master Lee Mattox (Sah Dan, 4th degree master) began his martial arts training in Kenpo Karate in 1982, receiving his black belt in 1989. He also studied other martial arts as a student at the University of Iowa such as Jeet Kune Do, Kali, Judo and a little Aikido. Master Mattox began his Tang Soo Do training in a little school in Tripoli, Iowa in 1990. When he became cho dan bo (blue belt) his school joined the WTSDA. Despite being failed twice by Master Schmitt and Master Grissom for his black belt test, he persevered and received his black belt in 1994. He would go on to receive his Sah Dan rank in 2012, and then his master's rank in 2013 while teaching at his studio, the International Martial Arts of Waterloo in Cedar Falls, IA. He loves teaching people on how to make the one steps work and to develop explosive power.

Mr. John Robertson

John Robertson is a T'ai Chi Ch'uan, Qìgōng and MArtial Arts instructor. He holds a 3rd Degree Black Belt in Tang Soo Do Karate with the World Tang Soo Do Association, is a Level VII Certified Master Instructor in Ki Gong with World Ki Gong, and a Level III Advanced Qigong Instructor with the National Qigong Association. John has received training in the US Europe and China. He also has an interest in acupuncture, acupressure, reflexology, Reiki, Traditional Chinese Medicine (TCM) and the I-Ching. John believes the understanding of all these fields and more is crucial to the effective and responsible practice of all forms of healing and martial arts. The message he conveys to his students is one of healing and non-aggression. In other words, find peaceful, energetic ways to help heal the body, mind and spirit of those we interact with so that the use of self-defense techniques is only considered as a very last resort. John is also a multi-faith ordained minister.