For almost 20 years, Marilyn Hartman, the "serial stowaway" has snuck onto several flights without a ticket, evading security. After being interviewed by a local Chicago network, Hartman found herself again being arrested at O'Hare for trying to sneak by security while being out on probation. Chicago Tribune Columnist Eric Zorn discusses why Hartman's case is so sad and why she doesn't belong behind bars with John.