For a three-act plot analysis, put on your screenwriter’s hat. Moviemakers know the formula well: at the end of Act One, the main character is drawn in completely to a conflict. During Act Two, she is farthest away from her goals. At the end of Act Three, the story is resolved.
Act I
Owen accidentally kills Johnny's mom when he hits a foul ball that hits her in the head.
Act II
As Owen and John grow up, Owen becomes more and more convinced that he is answering a particular call to action. He sees himself as God's instrument.
Act III
Owen dies saving the kids at the airport; John moves to Canada and starts a new life there.