The Boeing B-17, developed for the United States Army Air Corps (USAAC) in the 1930s, was primarily employed during the Second World War as part of the daylight strategic bombing campaign against German industrial, military, and civilian targets. It has become one of the most famous aircraft ever built, and one of the most important bombers in history.
cnn aviation correspondent pete muntean with the latest details. reporter: the hard work of investigating what went wrong is only beginning. investigators from the national transportation safety board are documenting the wreckage of not one but two planes involved in this midair collision. both part of volunteer organizations that keep world war ii planes flying. the larger airplane, a b-17 flying fortress, famous for the daylight bombing raids over europe. the other airplane, an extremely rare p-63 king cobra single-seat fighter plane. in both cases, only a handful of examples flying worldwide. airplanes like this do not have a flight data recorder or a cockpit voice recorderer, so investigators now say they ll listen to the recordings of radio traffic that took place during the air show. they re also asking for witnesses to come forward with photos and video, more examples of that horrific scene keep getting posted online by spectators. thankfully, nobody in the crowd