For those using this thread for information:

Delta CEO Richard Andersen on Airline Industry: Video - Bloomberg

Mr. Anderson makes it pretty clear what it means to be a Delta employee and what he expects. The emphasis has not changed much since Delta's first logo which contained the words "Safety, Comfort, Speed." In modern vernacular this might be best stated "Safety, Customer Service, Efficiency." The more a candidate can demonstrate his ability to hit those points, the better their odds of convincing Delta to hire them.