I read an interesting article in Airliner World magazine. According to the article all Hong Kong Airlines flight attendants are now fully Wing Chun trained. The training is required for cabincrew. They have to complete a three hour course before their first flight (and probably continue the training after that). Aparently Wing Chun incorperates close quarters techniques that are desirable for use in small spaces like on an airplane. According to the president of the company the training has physical, mental, and safety benifits. The article is titled "Calmer Cabins" and the author states that Wing Chun is intended to promote inner balance and core strength. The program has become so popular that the training is now offered to all of the internal staff of Hong Kong airlines.
Source: Airliner World Magazine, June 2012 issue, Page 22.
I think this is a great idea. Get paid to stay in shape and be prepared to defend yourself and others. If word got out that cabin crew were proficient in martial arts, it might help deter some people from making bad choices.