Excellent article ! 
 I have often wondered how this young man was doing.
 Had he finally received the help he needed, anger management, mental health counseling group counseling and empathy for others?  Did he get the help for learning how FASD affects impulses, educational learning, and memory ?  How to work/live with this disability?  Does he honor his victims ?  
Does he do anything, even a little thing, that brings some type of goodness or beauty to the world?
 I hope he does so to honor his victims and their lives that he took. 
I hope he now lives his life in a way to honor all those who lives were forever changed by his actions that day. 
I am a former foster parent of numerous teenagers, many had behavioral issues, had been victimized, some were suspected to be affected by FASD, a number had severe mental health issues and too many who were "Ping-pong" system kids. 
Too many of these kids failed by the systems that were suppose to be there to help them.
I hope we learned too.