He murdered children.
I find it hard to believe no one saw any of this coming, family is of course claiming he is a good boy who was damaged by the NFL, which I’d take their word for, but you are telling me you had no alarming signs that family intervention might be necessary? Your son just instantly snapped and murdered people?
There is such thing as getting someone institutionalized against their will. We have done it to my bipolar aunt a couple times, she once ran butt naked down my grandmother’s street like a freak. There are always signs of possible violent and self harming behavior with severely mentally ill people. They were just blind to what needed to be done.