I was in Atlanta recently and had an exchange with a GA that was well over the top....so much so that the pilot of the plane I was flying on, who was standing close by waiting for his papers, approached me and apologized for her behavior. My brother is a pilot for AA, he says the same thing about GAs at CLT, DFW etc. I believe it is an industry wide issue and not one specific to ATL or Delta. Interacting with people face to face is not a priority in business anymore. I have seen it reduced in my business and I deal with billion dollar accounts. I try to treat people with respect, but if I show up and you do not provide me the same courtesy it is game on.