MILFORD - Darwin L. "Mac" McCormick passed away on March 6, 2014 after a long illness. Mac retired after twenty years in the U. S. Air Force in 1967, and then retired from Civil Service after twenty years of service in 1987. He and his wife resided in Milford. He is survived by his wife of sixty-four years, Dorothy; and daughters, Cindy Butler, Sandy England, and Deborah Muir. Additionally, Mac had eight grandchildren and ten great-grandchildren. Mac will be interred at the Delaware Veteran's Memorial Cemetery in Millsboro. In lieu of flowers or gifts, the family asks for donations to the Delaware Hospice Center.