I doubt if he was shot after the crash.
How 'bout before the flight? If he had been shot during the flight the other passengers would have seen, or heard.
Of corse that wouldn't make a difference if the shooter knew the plane was to crash anyway.
They couldn't have known that the lady that died from loss of blood, on the way to the hospital would be alive.
I think Ron Brown was put on the flight after he was dead.