Re: Eyewitnesses...
I remember a crash of a helicopter several decades ago (it from the squadron I was in). Most of the ground based witnesses said the thing was flying and the rotors were turning but one witness took a picture as the chopper was maneuvering all over the sky. The picture showed the chopper upside down and the tail rotor and main rotor not moving. The pic was picked up by the press and in their eyes, case closed. Fast film and camera speed it turned out as the evidence was a hydraulic failure of the flight control system. So eyewitnesses and even carmera coverage are taken with a grain of salt.