A heavily armed former student killed three young children and three staff in what appeared to be a carefully planned attack at a private elementary school in Nashville on Monday, before being shot dead by police. Chief of Police John Drake named the suspect as Audrey Hale, 28, who the officer later said identified as transgender. Hale left behind a manifesto, had maps of the school detailing surveillance and entry-exit points, and was "prepared for a confrontation with law enforcement," the police chief told reporters following the latest outburst of gun violence to stun the United States.