Some corrections officials are doubling down on training to prevent a possible terror attack.  It's something Putnam County Sheriff Howard Sills and Macon-Bibb County Sheriff David Davis have thought a lot about in his department. "Radical groups throughout most of my 32 year career pretty much were limited to the Ku Klux Klan and outlaw motorcycle gangs." -Putnam County Sheriff Howard Sills

We talk with Chris Herring, who oversees the Institute for Homeland Security and Workforce Development at North Carolina State University. He provides training to corrections officers on detecting potential terrorists among the inmate population. Religion reporter Jack Jenkins of Think Progress also joins us to talk about whether extremism is on the rise.