Modern day adventurer (good aligned), there was a crisis, he rose to the occasion by grabbing some gear and going off to help people in need, without regard for the danger. Times like this can really bring out the heroism in some people.
In fact, that gives me an idea, a d20 Modern adventure with the PC's as rescue workers in New Orleans, protecting the survivors from looters and fires, rescuing survivors from flooded areas, navigating the dungeon-crawl like conditions inside some buildings trying to find someone shouting for help. Write it up, then sell the .pdf with all the proceeds going to a relief effort.