BAGRAM AIR BASE, Afghanistan " Soldiers here are careful not to use the term "hero" when describing actions observed on the battlefield. Not to say heroic actions haven't taken place. But the title is a badge of honor placed on only the most worthy combatants. And it's being used to describe one airman. In fact, many commanders here say this "hero" is worthy of the Air Force Cross. Some even suggest the airman deserves the nation's highest military honor. The enlisted tactical air controller, or ETAC, was part of a bloody 14-hour battle March 4. That day two Army MH-47...