How about other airlines' real slogans that had a sarcastic double meaning? For example,

Pan Am: You can't beat the experience (of a delayed flight, missed connection, lost bags, etc.)

Northwest: Look to us (to keep you stranded on a plane because we don't want to use the airstairs)

United (sicko interpretation): Fly the friendly skies ("it's not you we hate, just the government" says Mohammed Atta as the WTC rapidly appears bigger out the window)

What was Eastern trying to convey with "the wings of man"?