Keith W. Christensen was born on June 13, 1931 near Revillo, SD.  He served in the US Army from 1952 to 1954, having been stationed in Germany.  He started his career in law enforcement with the Sioux Falls, SD Police Department, where he was one of the first officers in South Dakota to have a K-9 unit: his partner was Stormy.  He was a highway patrolman for the South Dakota Highway Patrol for 20 years, having been stationed in Rapid City, Belle Fourche, Clark, Pierre and Vermillion.  He also worked for two years as a security officer with U.S. Marshall Service in Sioux Falls.  After his retirement, he moved the to the Christensen family farm near Hurley, SD and received his degree from The University of South Dakota.  He died on May 22, 2005 in Sioux Falls, SD.  Keith Christensen is the author of History of the South Dakota Highway Patrol with career stories by officers and wives.