The non-profit 22Zero is on a mission to support veterans and first responders who are struggling with PTSD. Their work has helped many of the heroes who stepped up in the wake of 9-11. Margaret Carrero has more.

<p>The non-profit 22Zero is on a mission to support veterans and first responders who are struggling with PTSD. Their work has helped many of the heroes who stepped up in the wake of 9-11. Margaret Carrero has more.</p>

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