Two Rivers Martial Arts - Primary Instructors

Hub Branch

Grandmaster Steve
Gonzalez

8th Dan

Grandmaster Gonzalez started training with Master Heintz in the mid 1980s. He earned his 8th Dan in December 2016. He is one of the primary instructors at the TRMA Hub and former President and Vice President of the TRMA Board of Directors. Grandmaster Gonzalez is the director of the annual Pil Sung tournament.

Master Bryan
Siever

7th Dan

Master Siever began training with Master Heintz in the spring of 1993. He earned his 7th Dan in August of 2023. Master Siever is one of the primary instructors at the TRMA Hub, serves as a member of the Board and is a former President and a former Secretary of the TRMA Board.

Master Brad
Kramer

5th Dan

Master Kramer earned his 5th Dan in April of 2022. He is a primary instructor at the Hub branch and is the current President of the TRMA Board of Directors.

Mr. Lance Kinseth

Mr. Kinseth began training with Master Heintz in 1983 and has taught taekwondo at various branches and at the Hub. He has over 45 years experience in a variety of martial arts, with particular emphasis upon taekwondo, kumdo and jodo. He is the instructor for the Martial Spirit class that integrates a broad variety of martial arts.

Ms. Rochelle Douglass

4th Dan

Ms. Douglass began training in 2005 with Iowa Methodist Tae Kwon Do. Ms. Douglass earned her 4th Dan in June 2022 through TRMA. She is one of the primary instructors at the TRMA Hub, serves on the Board of Directors and is a former Vice-President of the TRMA Board.

Mr. Dave Nelson

4th Dan

Mr. Nelson started with Two Rivers Tae Kwon Do in August of 2010. He is currently a 4th Dan Black Belt, and teaches at the TRMA Hub branch.

Mr. John Hornback

3rd Dan

Mr. Hornback began training at Two Rivers Martial Arts in 2009 and is one of the primary instructors for the school's Black Belt Youth Group. Mr. Hornback is also the instructor of the school's Kobudo, Okinawan Weapons class and holds Black Belts in TaeKwonDo and Kobudo, Okinawan Weapons. Mr. Hornback is a past member of the TRMA Board of Directors.

Mrs. Jennie Mitchell

3rd Dan

Ms. Mitchell earned her 3rd Dan in December 2024 and is a the current Treasurer of the Board of Directors.

Mr. Matt Mitchell

2nd Dan

Mr. Mitchell started training in October of 2014 and earned his 2nd Dan in February of 2021.

Carlisle Branch

Ms. Vickie Hornback

3rd Dan

Ms. Hornback began training at Two Rivers Martial Arts in 2009. She is currently one of the primary instructors at the school's Carlisle location. Ms. Hornback is also an instructor for the school's Black Belt Youth Group and holds Black Belts in TaeKwonDo and Kobudo, Okinawan Weapons. She is a former Secretary and former Vice-President of the TRMA Board of Directors.

Mr. Don McDonald

3rd Dan

Mr. McDonald earned his 3rd Dan in December 2022 and is a former member of the TRMA Board of Directors.

Clive/West Des Moines Branch

Master Jennifer Bailey

5th Dan

Master Bailey began training with Two Rivers in 2008 and earned her 5th Dan in April 2022. She is one of the primary instructors for the Clive/West Des Moines Branch and teaches at the Waukee branch. She is a former President, Vice-President, and Secretary of the TRMA Board.

Mr. Kendall Bailey

4th Dan

Mr. Bailey began training with Two Rivers in 2010 and earned his 4th Dan in June 2022. He is one of the primary instructors for the Clive/West Des Moines branch and teaches at the Waukee Branch. He serves as business manager and manages the information technology needs of TRMA. Mr. Bailey is a former Treasurer of the Board of Directors.

Mr. Doug Whitehead

3rd Dan

Mr. Whitehead earned his third dan in October of 2023, serves on the Board of Directors and is a former President, former Secretary and former Vice President of the Board of Directors.

Mr. Jeremiah Keller

1st Dan

Mr. Keller earned his 1st Dan in February of 2024 and is a former vice-president of the Board of Directors and continues to serve on the board.

Indianola Branch

Master Roger Netsch

7th Dan

Master Netsch earned his 7th Dan in August 2023. He teaches at the Indianola and Winterset Branches. He is a former President and former Vice President of the TRMA Board of Directors.

Master Lucy Kingsbury

5th Dan

Master Brian Anderson

5th Dan

Master Anderson began training in December 2003 and earned his 5th Dan in June 2021. He is a former Secretary of the Board of Directors

Mr. Bryce Wilbur

3rd Dan

Mr. Wilbur earned his 3rd Dan in April 2023, and is a current member of the Board of Directors.

Waukee Branch

Master Jennifer Bailey

5th Dan

Mr. Kendall Bailey

4th Dan

Mr. Jim McNamara

Temporary Black Belt

Mr. McNamara began training in 2022 and earned his Temporary Black Belt in April of 2025. He is one of the primary instructors for the Waukee branch.

Winterset Branch

Master Roger Netsch

7th Dan

Master Netsch earned his 7th Dan in August 2023. He teaches at the Indianola and Winterset Branches. He is a former President and former Vice President of the TRMA Board of Directors.