sprawling branch jail. the rio cosumnes correctional center. >> you water those mares there? ab-10 inmate has been in the horse program since it was implemented five months earlier. its goal is to make wild horses suitable for adoption. >> we leave in the morning and we get back at night. by the end of the day, it's a long day, but it makes the day really fast. >> and that's important. carey is only one year into his sentence for manufacturing and selling firearms and high-capacity magazines without a license. carey said he learned how to make guns from his father who did so legally on their pennsylvania farm. >> it was just part of our every day life. we'd go to the range and spend the whole day at the rifle range and stuff. that's what i did as a kid behind him. even when i didn't know how to shoot, i would be out on the range picking up buckets of