Behind The Scenes With The McCains

Be sure to watch Katie's interview with Sen. John McCain and his 96-year-old mother, Roberta, tonight on the CBS Evening News. If you want a taste now, we put a preview up online, so click here to check out a couple of Katie's questions - and the McCains' interesting answers.

Also, Katie posted a behind-the-scenes video on her YouTube channel to give viewers a closer look. Just click below to watch.