Keith A. Heisey, 63, of Middletown, passed away Tuesday, October 12, 2021, in Hershey Medical Center. Born March 22, 1958, in Harrisburg, he was the son of the late David C. and Margaret M. (Vail) Heisey. Surviving is his wife of 40 years, Margaret "Meg" M. (Boyle) Heisey; two sons, Stephen A. Heisey and wife Michelle, and Christopher M. Heisey and wife Sarah; granddaughter, Avery Karen Heisey; and sister, Karen Mamrak. Keith was a retired engineer at Three Mile Island, with 35 years of service. He was a graduate of Central Dauphin High School, Class of 1976, HACC and Penn State University, Class of 1980. Keith, a former Eagle Scout himself, was actively involved in Boy Scouts of America, Troop 66, in Hummelstown, PA. A Memorial Service will be held 11:00 AM, Saturday, October 23, 2021, in Neill Funeral Home, 3501 Derry St, Harrisburg. The Family kindly requests that masks be worn at the service. A visitation is from 10:00 AM, Saturday, until the time of the service at the funeral home. In lieu of flowers, memorial contributions may be made to the Bethesda Mission, PO Box 3041, Harrisburg, PA 17105.