The B-17 Flying Fortress! The gathering of Warbirds that occurs during each AirVenture is both unique and historic. Paul H. Poberezny was also unique and historic. He was an American aviator and aircraft designer. He founded the Experimental Aircraft Association (EAA) in 1953, and spent the greater part of his life promoting homebuilt aircraft. Poberezny is widely considered as the first person to have universalized the tradition of aircraft homebuilding. Length 15:15.