You are right to think that patriotism had a lot to do with the initial purchase of RR powered equipment. However, I don't think CX would keep buying subpar products just to be patriotic!! Before your stage 1 I would go to the Rolls Royce website and find out some of the key differences between the RR engines and the US made PW & GE motors. I think you will find some additional good info there. Good luck with your interview