Delta issued the following statement:
Delta flight 30 from Atlanta to London returned to Hartsfield-Jackson Atlanta International Airport on Wednesday after an issue with its number 2 engine. The flight landed without incident and airport response vehicles met the aircraft upon arrival. The airplane was towed to the gate, where customers deplaned through the jetway and will be accommodated on a different aircraft. The safety of our customers and crew is always our top priority and we apologize to our customers on this flight.