2 years ago I attended a fly in British Columbia. John Hart's grandson had arranged for a ride for his Grandfather in one of the Harvards attending. He was physically rather frail but mentally 100%. A very interesting gentleman and he was very moved at the response and interest he received at the fly in. He very much enjoyed and appreciated the ride although in the politest possible terms did allow as to the fact that he was disappointed there was no control stick in the back cockpit !