(CNN) Ret. Sgt. Tom Block is sitting in the classroom, looking restless. He and 23 other highly specialized, highly coveted candidates are all vying for a job where they will be exposed to some of the most horrifying images humanity can produce.
Each candidate is a veteran of America's recent wars. Many were part of the elite special ops forces. They conducted daring, covert missions to take out America's most dangerous enemies.
Many were wounded in battles across Afghanistan and Iraq. And now that their military career has come to a close, they are looking for a second chance to find purpose in their lives back at home -- and the answer could be the HERO Child-Rescue Corps, saving at risk kids.
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