What happens in this video ?
On July 27, 2007, an amateur-built P-51A Mustang collided with the tail section of a North American P-51D Mustang as it was landing during the Experimental Aircraft Association (EAA) AirVenture Oshkosh air show (Oshkosh, WI). The aircraft in the rear flipped over and burst in flame. The other plane came to a stop with its nose down. The pilot of the aircraft that ended up on its nose was able to walk away from the crash. The pilot of the other plane was killed.