I don't think the cabin crew will be first at all! Everybody knows they will simply strike - they can't conceive that the company could ever go to the wall!
No, he will pick on the targets with a proven track record of taking whatever is thrown at them. Not due necessarily to lack of resolve on the part of elected reps. More to do with the types of people making up the majority of that particular workforce. Sadly.
Oh, that'll be the pilots then!!