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PHILADELPHIA (AP) — Christopher Knafelc (kuh-NAY-ful) was a recovering drug addict with a long rap sheet who often wondered if he was a good person, and perhaps never considered that anyone thought he was a hero.

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But that was before he leaped onto the tracks to help a stranger he'd just seen fall off the platform at a Philadelphia train station.

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He called up to people on the platforms to get the trains stopped, knowing one would be arriving soon.

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Now, the 32-year-old Knafelc is being hailed as a hero and he's holding his head a little higher. He's taking the praise from his good deed as another sign that he's on the right path in life.

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Still, Knafelc says he was just doing the "right thing."