A shooter armed with two assault-style rifles and a handgun killed three students and three staff members at a Christian school in Nashville, Tennessee, on Monday morning, authorities said. The suspect, identified by police as Audrey Hale, 28, of Nashville, had a detailed map of Covenant School, a school for students in preschool through sixth grade, … Continue reading ‘Nightmare’: 6 killed in ‘calculated’ mass shooting at Nashville school