>> rorter: meet quan huynh, sharon richardson and dontae thomas. among them, more than four decades behis. but since coming home, successful entrepreneurs. dontae thomas runs a one-man personal training business in new jersey, begun in a sense with fellow inmates during his 11-year stint. >> i would train them for a dollar a day in there and that's how i got go i started learning more about the body. so i learned more about ntiut, supplements. so, i'm like, alright, i get good at my craft. i can utilize this when i go home. so every day i was just studying 12, 16 hours a day. for people to catch on to you-- >> reporter: released in 2017, thomas's "team chizel" built up to almost 40 clients. quan huynh-- in for 16 years-- began working onewhe cleaning t the prison hospital. >> so, i knew about sanitizing. i know about cleaning. i know about bloodborne pathogens.so i just gave me an e for detail and so six months after i had been home, i saw an rtunity of a building that