Southwest Airlines passengers stand in line at the ticketing/checking counter at Hobby Airport on Thursday, July 21, 2016, in Houston. Southwest Airlines struggled to recover from a massive computer outage, canceling hundreds of flights around the country. (Brett Coomer/Houston Chronicle via AP)
Southwest Airlines passengers stand in line at the ticketing/checking counter at Hobby Airport on Thursday, July 21, 2016, in Houston. Southwest Airlines struggled to recover from a massive computer outage, canceling hundreds of flights around the country. (Brett Coomer/Houston Chronicle via AP) Brett Coomer AP
Southwest Airlines passengers stand in line at the ticketing/checking counter at Hobby Airport on Thursday, July 21, 2016, in Houston. Southwest Airlines struggled to recover from a massive computer outage, canceling hundreds of flights around the country. (Brett Coomer/Houston Chronicle via AP) Brett Coomer AP
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No. 9: Computer problems at airlines

December 23, 2016 1:08 PM