The children are playing duck-duck-goose with their teacher outside their elementary school when the siren suddenly blares.
원문출처 : http://www.cnn.com/2017/03/19/asia/japan-north-korea-missile-drill/index.html
원문출처 : http://www.cnn.com/2017/03/19/asia/japan-north-korea-missile-drill/index.html