ATL Airport--Domestic in but International out...how many terminals must we traverse?

We are flying Delta into Atlanta Sunday morning on a domestic flight but we have a connection to an international flight (Turks and Caicos). I've tried looking at the terminal maps, but I can't tell--are we going to have to go to a completely different terminal for international (similar to Newark, NJ) or is it more of a "You're at Gate 4, run to Gate 8343!" I'm simply curious because we only have an hour layover! Thank you!