There will be more blood spatter evidence introduced likely, but it's an obvious inference that the amount of blood spatter in the front of the truck, along with the pattern and velocity of the spatter, that TB was a) shot b) in the head. IF he was cut w a box cutter there wouldn't be gun residue or high impact spatter. IF he was shot in the thigh for example, it is very unlikely that the spatter would be on the interior ceiling and/or the driver's side. That someone was shot in the head isn't proof of death, but increases the odds. Why does it matter, can I ask, if TB was merely incapacitated by a gunshot to the head vs the incinerator?? When there's proof of both things occurring, and both occurrences being linked to DM/MS.