Kaiser inadvertently raised another point in his post (below). When did flight attendancy become a profession? Yes, the word can be used in a broad sense but doesn't a "professional" usually hold as an occupation requiring specialized training? Lawyers, doctors, scientists; those are people you can call "professionals." Flight attendants are (sometimes) lovely people but last time I checked they didn't have to attend graduate school, pass any grueling exams, or even show me how to buckle my seat belt now that they have those new-fangled TV screens.
Recommendation: Short unions and pretension, in size.