1 / 8 Sam Porter

19-year-old Sam Porter from Australia has saved an incredible <a href="https://www.huffpost.com/entry/sam-porter-australian-tee_n_1596701" target="_hplink">three lives in three years</a>. Last month, he pulled a drowning woman to safety; last year, he pulled a woman out of a car wreck; in 2010, he jumped in front of a train to pull a suicidal teenager off the tracks. Porter is currently training to become a cop.

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