- HERO Corps trains wounded troops to track down pedophiles
- They work with law enforcement in the U.S.
- For many it's a second chance they thought they'd never have
Largo, Florida (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.