A Georgia sheriff choked up Wednesday at a news conference as he and other law enforcement officers shared details about a mass shooting at a high school that left four dead and nine hospitalized with injuries. Colt Gray was identified Wednesday afternoon by the Georgia Bureau of Investigation as the 14-year-old suspected of killing two teachers and two adults at Apalachee High School in Winder. He surrendered to two school resource officers and will face murder charges in the mass shooting, authorities said at a news conference. Barrow County Sheriff Jud Smith choked up as he stepped up to th…