Rapid City - Robert R. Koenig Sr., 75, passed away at his home Tuesday March 20th. He was born and raised in Yankton South Dakota to Emil and Mary Koenig, the youngest of their 7 children. He graduated from Yankton high school in 1955 and immediately entered the US Navy serving 4 years as a fire control technician aboard the destroyer USS Hawkins. After being honorably discharged from the Navy he studied electrical engineering at the SD School of Mines & Technology graduating in 1964. After graduating from college he went to work for Black Hills Power & Light in their engineering department and spent the next 35 years working there until retiring in 2000. He loved working for "the company " as he called it and was proud of his years spent there. While working at Skarty Service Station during college he met the love of his life Donna Anderson and married soon after in 1961 spending the next 50 wonderful years together. They raised 3 sons at their home in Chapel Valley where they reside to this day. Dad was a dedicated and loving father and husband. He had a love for his family, his years spent in the navy and for working in his shop tinkering or trying to solve any challenge he came across. When anyone asked how he was doing his reply was always "I'm excellent" even when he was having a hard time the last several months. He is survived by his wife Donna, his sons Bob and Scott both of Rapid City and Jim from Kansas City, 3 daughter-in-laws and 3 grandchildren. He was preceded in death by his parents, Emil and Mary, his brothers Bud and Ernie and sisters Doris, Alice and Wilma. Visitation will be Thursday, March 22 from 5:00 to 7:00 pm at Osheim & Schmidt Funeral Home, 2700 Jackson Boulevard. Funeral services are scheduled for 10:00 am Friday, March 23 at South Canyon Lutheran Church, 700 - 44th Street, with Rev. Bruce Thalacker officiating. Burial will follow at Black Hills National Cemetery near Sturgis with full military honors provided by the Rushmore VFW Post #1273 and the South Dakota National Guard. Dad was a wonderful man, fiercely honest and always willing to help anyone in need. He will be missed greatly. In lieu of flowers a memorial to either the Salvation Army or the Humane Society of the Black Hills would be appreciated by the family.