Oooo there's a good thought! I can't believe no one has brought up that possibility yet. That would make a fantastic scene IMO. Even though Kyle is military, he is still a very young man with a naive outlook on things. He wouldn't be as jaded and haunted as his father, and we know for a fact he's not afraid to approach him when something doesn't sit well with him. It may take Kyle's youthful view of right and wrong to remind Horatio of the man he used to be, and hopefully change himself to show his son not to grow up into the man he is now.