Enjoy your trip TM 420 and wife! If there are no issues with the first leg of the flight, you should be OK with a 1 hour layover in ATL. You will have already cleared security at your originating airport, so just need to make it to the gate of your connecting flight. Maybe if you tell the flight attendants that you have a short layover, they will let off the plane first to assure that you make the connection. Are both flights with the same airline?