Koster, Mark C. 12/08/1950 ~ 09/17/2013 SAN DIEGO -- The Lord took him gently in his sleep while in Seminole, Florida. Mark is preceded in death by his parents M.A. (Moose) Koster and Leona Wanda Koster. Mark leaves behind his love and partner of 28 years, Sheila Terrell, son Travis Koster, daughter Danielle Matson, three grandchildren, sisters Carolyn, Pat, Gale, and Loralee, and many nieces and nephews that thought he was the "cool uncle". He was loved, he will be missed, but we are confident that to be absent from the body is to be present with The Lord.