WINDER, Ga. (Court TV) — The man found guilty in connection with a mass shooting involving his son at a Georgia high school will face sentencing this summer. Colin Gray testifies in his own defense on Feb. 27, 2026. (Court TV) A jury convicted Colin Gray of all 29 charges he faced, including two counts of second-degree murder and two counts of involuntary manslaughter for the shooting on Sept. 4, 2024, at Apalachee High School. While Colin Gray …