 We know that the son got access to the AR-15, or maybe it was a present for him. We know that the son failed the junior varsity tryout for the riflery team in high school. Yes, in Pennsylvania, there are still riflery teams in high schools. And he failed it because he wasn't a good enough marksman. And one of the other people, kids, was quoted as saying that they thought it was too dangerous to have him on the team.