Great Mills High School in Great Mills, Maryland, is on lockdown after a shooting at the school, St. Mary's County Public Schools said on its website.
원문출처 : https://www.cnn.com/2018/03/20/us/great-mills-high-school-shooting/index.html
원문출처 : https://www.cnn.com/2018/03/20/us/great-mills-high-school-shooting/index.html