and the 2s are keyed the same. so you have two sets of keys for each shackle. it's security. in case anyone gets a hold of one of our key chains. more than likely they're not going to get a hold of two. >> got the secure the chains so the lock won't go up and down on your foot. the most comfortable place for you to walk, or you're going to trip on them all day long. you have to secure them. with the shoestring. >> get your bags two at a time starting up front. ♪ >> at age 50, mchellon is one of the oldest inmates to work in the fields. his 20-year-old cell mate scott parker is one of the youngest. he's serving five years for armed robbery, burglary, and drug possession. >> i been in that cell for 14 months, you know what i'm saying? now 18 months.