Well, they've got something in Texas:
https://jobs.boeing.com/JobSeeker/JobSearch
and sort by state
But I agree that if QF were thinking of signing up, YSSY and QCC would be crawling with seppos.
Then again, if there were mock-ups & engineering stuff to look at & poke around, then the QF bods might have to make the trip.
The alternative is that they were sighted at Bush en-route to the Caribbean or somewhere else for a spot of fishing...