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FILE - In this April 14, 2015, file photo, Delta Air Lines passengers watch as a Delta plane taxis at Atlanta's Hartsfield International Airport in Atlanta. Delta Air Lines grounded flights scheduled to leave Monday, Aug. 8, 2016, after experiencing unspecified systems issues. Confirmation of the troubles came in an official account that responds to customers via Twitter. The airline declined to immediately comment by phone and it was unclear whether all its flights were affected. (AP Photo/Charles Rex Arbogast, File)
FILE - In this April 14, 2015, file photo, Delta Air Lines passengers watch as a Delta plane taxis at Atlanta's Hartsfield International Airport in Atlanta. Delta Air Lines grounded flights scheduled to leave Monday, Aug. 8, 2016, after experiencing unspecified systems issues. Confirmation of the troubles came in an official account that responds to customers via Twitter. The airline declined to immediately comment by phone and it was unclear whether all its flights were affected. (AP Photo/Charles Rex Arbogast, File)

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Delta Airlines: Our systems are down everywhere

Delta Airlines has grounded flights worldwide due to a system failure. CNN's Rene Marsh has the latest.

Delta Airlines: Our systems are down everywhere

Delta Airlines has grounded flights worldwide due to a system failure. CNN's Rene Marsh has the latest.