Question: Which city are the headquarters of this airline founded in 1946 and privatized in 1969, which operates joint ventures with Delta Air Lines, located? 
Sentence (from "Delta TechOps"): Delta TechOps is the maintenance, repair and overhaul (MRO) division of Delta Air Lines, and is headquartered at Hartsfield-Jackson International Airport (ATL) in Atlanta, Georgia.
Relevant evidence: No