While a gunman killed children in a Texas school, officers stood in a hallway and waited for keys and a tactical team, official says
원문출처 : https://www.cnn.com/2022/05/27/us/uvalde-school-police-chief-shooting-response/index.html
원문출처 : https://www.cnn.com/2022/05/27/us/uvalde-school-police-chief-shooting-response/index.html