I can't believe you guys are saying he is in the wrong for attempting to intervene. When somebody threatens to take their own life, it is important to get others of higher authority involved so help can be brought to the situation without a more gruesome outcome.
To everyone saying, "It isn't your life stay out of it". I'm glad everyone doesn't share your mentality. I can't imagine firefighters, police, EMS, or even military only out to save their own asses not giving a stuff what happens to everyone else.