Mission Lawyers

Mark J. Welter was born and raised in Yankton, South Dakota; and Mark has lived in South Dakota his whole life. Mark earned a business degree at the University of South Dakota, and his law degree at the University of South Dakota School of Law. Mark then worked two years as a law clerk for John B. Jones, U.S. District Judge, District South Dakota, Southern Division. Mark then worked for 15 years as an insurance defense personal injury trial lawyer and worker’s compensation lawyer for Woods, Fuller, Schultz & Smith P.C. in Sioux Falls, defending clients against...

Beau became partner in 2024 with his firm Den Herder, Hovden & Barrett. He joined the firm in 2019 as an associate. Beau has several years of experience practicing in a variety of areas including personal injury, civil litigation, real estate transactions, and debtor-creditor negotiations. Beau serves as the municipal attorney for several South Dakota towns including, Mission Hill, Lesterville, Gayville, Volin, and Wagner. Beau graduated from the University of South Dakota Law School in 2014. During law school Beau served as Lead Articles Editor for the South Dakota Law Review and was a member of the Trial Team. Beau has...

I have over 30 years experience helping people with difficult problems. I am a former public defender and later a prosecutor. I have had numerous jury trials. My experience enables me to help you in cases from personal injury/automobile accidents to criminal and DUI defense as well as family law. My family law practice includes divorce, custody, child support, adoption, guardianship and conservatorship matters. I also handle bankruptcy cases for people looking for a new start financially.

David L. Ganje is a commercial law and commercial litigation attorney and also maintains a natural resources practice. He has grounded his legal experience as a practicing attorney, a former commodity arbitrator, a member of the board of directors of an S&L and an adjunct professor to hone his skills in these areas of practice. Born and raised in Aberdeen, South Dakota, David handles matters related to mineral law, oil and gas law, energy law and water law in his natural resources practice. The practice includes representation before local and federal regulatory bodies. In his commercial law and commercial litigation practice, David...

My commitment to each client is to achieve results that exceed expectations by providing high quality, personalized legal services. My commitment to each small business client is to provide high quality, creative, and results-oriented legal services and to serve as a primary resource in all aspects of the client's growth and development througout the formation, operations, and termination stages of the business life cycle.

Horn Law Office is owned and operated by Garrett Horn, J.D. Mr. Horn has been practicing law since 2001 in Yankton South Dakota where he started his own firm, Horn Law Office, in 2006. Horn Law Office, fighting for you.

Ryan Walno is a passionate and relentless defender of his clients’ rights, known for treating each case with personal dedication and attention. His legal experience spans a wide range of matters across South Dakota’s courts—from simple traffic violations to complex felony cases. No matter the forum, whether it's a local magistrate court or the South Dakota Supreme Court, Ryan brings focus and determination to every case. After receiving his Juris Doctor, Ryan began practicing law in Spearfish, South Dakota, gaining valuable experience before joining Waeckerle Law, Prof. LLC. His strong performance in criminal defense earned him the distinction of Super Lawyers...

Scott Armstrong is an experienced trial attorney, who has been practicing law for nearly thirty years in multiple jurisdictions.

I practice primarily in the areas of family law and family mediation. Family law includes such fields as divorce, child custody, child support, spousal support, paternity, and adoption.

I was born and raised in Rapid City, South Dakota. After completing undergraduate at the University of Wyoming and law school at the University of Nebraska College of Law, I completed a two-year clerkship with the South Dakota Supreme Court working with Justice Janine Kern. After that, I entered private practice, focusing almost exclusively on civil litigation. I enjoy helping people that have been injured or damaged in a variety of circumstances.