Fredrick Willis Waldren, age 91, passed away December 9, 2019 in Denver, Colorado. Fredrick was born February 1, 1928 in Denver, Colorado and was the oldest of three. Following high school he joined the US Marine Corps at the end of WWII and was stationed in China. Some of the proudest moments of Fred's life were marrying his wife Reon in 1961 and when the couple adopted their daughter Diana in 1966. He worked for Frontier Airlines and Continental Airlines throughout his life and earned many employee of the month awards. Fred was a former member of the Arvada United Methodist Church, and loved his church. Throughout life he enjoyed hunting, cars, planes, vacationing with his family, time spend in their mountain cabin and bowling. Fred will be missed by his wife of 58 years Reon R. Waldren; daughter Diana L. (Oluwatosin A.) Solarin; sister in law Linda Waldren and grandchildren Jeffrey, Gabriel and Grace Solarin.