And to assess his dad's comfort level too. After all, for all LE knew, dad could be turned into a kind of hostage. Bryan could have told his dad all about the situation (which I believe he did not) and dad was agitated and Bryan was speeding and tailgating. For all they knew, all heck was breaking out in that car.
I think they wanted to assess BK and to do a little welfare check on Dad.
I posted yesterday about forensic photography. Yes, I believe he will be reexamined and they have special lights they bring in, and sometimes use MRI or similar to try and determine wounds from a month or two before.
Forensic photography plays a vitally important part in the investigation of crime and the subsequent administration of justice. Written by a practitioner with many years professional experience, this book provides an overview of the most common forensic photography techniques in use today for...
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It's not the whole book. P 262 has interesting example pictures. The last section considers to what degree older scratches and lacerations can be seen with special photography.