I kinda love that the Gulfstream has a tail of N747NB. Shows that we're ALL wannabes! LOL
That Gulfstream was sorta interesting, a G2 with aftermarket G3 wings, making it a G2SP...
http://www.jetdirectcharter.com/pages/N747NB.html
I can only assume the presidential campaigning is responsible for the influx of turbines at the 2007 Midwest Fly-in.