Power outage brings KATL to its knees.
Smoke reported in lower transport tunnel.
Think one concourse has power back but yes, it’s a mess.
The Falcons did manage to get out of town in the middle of it though somehow … 
https://flightaware.com/live/flight/DAL8863/history/20171217/2030Z/KATL/KTPA
Fire involving a Georgia Power substation at the airport caused the electrical outage.
What caused the fire has yet to be determined.