The Warbird Heritage Foundation operate a fleet of vintage military aircraft from their base in Waukegan IL.  The aircraft make frequent appearances at airshows around the country including participating in Navy Legacy Flights and Air Force Heritage Flights.  You can see some individual shots on the individual gallery pages.  IN addition, below is a time-lapse video taken at “The Bunker”, the heavy maintenance facility they have at Waukegan.  You can visit their website at http://www.warbirdheritagefoundation.org/