David Michael Gannon, 50, of Woodstock, Georgia, passed away over the weekend in Atlanta. He was born in Pittsburgh, Pennsylvania and graduated from Penn State University. He was employed at Coca-Cola for 3 years and 13 years at Lockheed Martin, as a software engineer. He was preceded in death by his father, Joseph Gannon. He is survived by his mother, Josephine Gannon; son, Daniel Gannon of Woodstock and former wife of 26 years, Lisa Gannon, from Woodstock. He is survived by 1 sister, 2 brothers and many nieces and nephews. The family will receive friends on Wednesday, Feb. 5th, from 5-9 P.M. at Woodstock Funeral Home.