What is a Hero?

How does someone become labeled as a "hero?" Is it merely based on a single event in which the spotlight of media brings out only the good in some ones actions? Or does some one have to live a life of glory and wonders with no shame what so ever. I've looked up to fire fighters in my life because they spend their whole lives saving others. And I look up to those passengers on the Pennsylvania flight on 9/11 because they fought back. So how do we define a true hero? Everyone's definition is different.
<Tab/>I look at my peers' role models and wonder what they see in that perso…