Southwest Airlines continues to grapple with an "operational emergency" after an unusually high number of planes have been taken out service.
원문출처 : https://www.cnn.com/2019/02/19/business/southwest-flight-cancellations/index.html
원문출처 : https://www.cnn.com/2019/02/19/business/southwest-flight-cancellations/index.html