By my reckoning, no one is a hero by virtue of their job. Not firemen, not policemen, not EMS personnel, not professional athletes, not coaches, not soldiers. Why? Because being a hero requires actually doing something heroic, such as actively risking death for others. We cheapen the word "hero" whenever we apply it so liberally to entire professions.
An actual hero? This past week there were more than a few actual heroes out there, actively risking their lives. Sadly one died, Officer Sean Collier. Here's to all those who ran towards danger.