Harry A. Sieben was sworn in as Civilian Aide to the Secretary of the Army for Minnesota on October 27, 2006. Francis J. Harvey, Secretary of the Army, administered the oath, presented the CASA flag, and pinned the CASA pin on Mr. Sieben. Following the investiture Secretary Harvey hosted a luncheon in the Pentagon. in honor of the new CASA.

Mr. Sieben was accompanied by a number of members of the Minnesota Air National Guard, from which he had retired at the rank of Major General. Charlie Maddox and Judy Legerski, CMP Chair and Vice Chair, were also in attendance. They have each served as CASAs for a number of years and have been awarded the honor of CASA Emeritus status.

Mr. Sieben is a nationally recognized personal injury attorney. He was educated in Minnesota, receiving his BA from Winona State University and his Juris Doctorate Degree form the Minnesota Law School in Minneapolis. The Harry A. Sieben Award is awarded to a student at William Mitchell College of Law annually.

After serving seven years with US Army Reserve, Military Intelligence Branch, he received a direct commission in the Minnesota Air National Guard in April 1975. He served in the Judge Advocate General's Corps for the 133rd Airlift Wing, 148th Fighter Wing and Headquarters Minnesota Air National Guard. In 1990, he was appointed by the governor to the position of State Judge Advocate for the Minnesota National Guard. He served as Assistant Adjutant General, Air, and later as acting Adjutant General for the State of Minnesota. He was promoted to Major General in 2003.

Mr. Sieben served his state in the Minnesota House of Representatives from 1971 though 1985. He was elected Speaker of the House and served in that capacity from 1981 to 1985.

The new CASA presently serves on the Board of Directors of the Civilian Marksmanship Program as an officer, and on the Boards of the Regina Medical Center and Starbase Minnesota.

The CASA program was instituted in 1950 and serves to promote good relations between the Army and public. CASAs act as spokespersons for and advisors to the United States Army.