Alright, it's sad to hear about something like this. Best of wishes to the family.
I've skimmed the first two pages and just want to say this based on what I read (Corndogg, I read your warning, but this isn't specifically about the cause of death. But if you feel the need, please go ahead and remove this):
It looks like we're trying to avoid the fact that Parkour could be the cause of the death. Yeah, no one here wants to know that parkour is actually related to the death of someone. But we need to be open to all possibilities. Our motto is to be prepared right? Well, we need to be prepared for when this may really happen. The reality is that we actually have a pretty high chance of death when doing roof jumps. The professional traceurs and teams who make roof jumps all the time could easily slip and fall 5 stories to the cement below.
I know the media may be protraying Parkour incorrectly, or may even have their facts all wrong from the start, but again. The possibility is there. You can't just shun it away because we believe that every sensible traceur will know the dangers of rooftops. That is the reality, there is always a chance that something can go wrong.
Again, be ready for anything.