Courtesy CDCR

A screen grab of a video showing new Los Angeles County jails chief Terri McDonald.

Los Angeles County is getting a new Assistant Sheriff for custody. In other words a Jails Chief who'll be responsible for running the largest jail system in the country. Monday is Terri McDonald's first day on the job. 

She's the former under-secretary of the California Department of Corrections and Rehabilitation. KPCC's Rina Palta joins the show to give us a sense of who she is and what her task ahead looks like.