James (Jim) Edward Theis, age 78, was born in Sioux Falls, SD on March 12th 1944 and went to be with the Lord on December 7th 2022 Orange, CA.

James is survived by his wife Joan, his children Jeffery, Rachel, Joseph, Vincent and Gina, his six beloved grandchildren and one great-grandson.

James resided in Orange County, California, for over 40 years, he was a retired Marine Corp Veteran and a Bio Medical Engineer who owned a successful medical repair depot JET Medical Electronics INC. James loved his family, they were his greatest joy. He enjoyed spending time with his grandchildren and was very involved in their lives. He had a passion for airplanes, vintage cars, loved to travel with his wife Joan, but his favorite thing was fishing and relaxing on Lake of the Ozarks.

He is proceeded in death by his loving wife Rita Kay, his parents Lawrence and Irene and five of his siblings.