You mean these two?
They are local, based out of the AAM. N4207W has been around for a couple of years, and N7511Q was just obtained in May, a week or so before the airshow. In fact, if you notice, the paint on N4207W is shiny, while N7511Q is more of a flat finish. That's because 07W was repainted after arriving in the States, while 11Q is more or less fresh off the Czech AF flight line.
Here they are, side-by-side inside the AAM, a few days before the Memorial Day airshow.