Joe Troiani: What makes a hero?

The president of France pinned his country's highest award, the Legion d'Honneur, on three Americans and a Briton on Monday, saying they "gave a lesson in courage" by subduing a heavily armed attacker on a high-speed train carrying 500 passengers to Paris.

Professor Joe Troian of Chicago's Adler University joined us LIVE on Good Day Chicago to talk more about the story.