(WGHP) -- When all the movers and shakers gathered at the Piedmont Triad International Airport for the big announcement, there were smiles everywhere. JetZero, they announced, is going to build the manufacturing facility for its new plane at PTI and bring nearly 15,000 jobs with it. And it might happen, but there’s no guarantee, even though it was reported in some circles that the jobs were an inevitability. It is certainly a great win for the T…