you are looking at a 11kg wheel or something close + it seems suspension bits attached to it, probably also full brake system and hub..
No doubt that poor Henry probably had is neck instantly broken.. with inertia and speed, the impact to the head must have been huge.
I am a bit concerned why no thethers are mandatory in FR..
Motorsport is dangerous, probably a bit of a freak accident, but still.
Melbourne accident in 1999(??) with JV crash, with a loose wheel killing a marshall was a freak accident also, the wheel jumping exactly through the 60cm opening between the fences..
RIP !