dr. james o' connell cares for homeless patients on street medicine. that is tonight on "chronicle." all right, taking some of the stress out of holiday travel. phil: is it as easy as a four-legged friend? next, the program that' s putting dogs in busy airports to help you relax a little. ed: i' new at 6:00, five investigates a concorde clerk suspended because of h work happens. plus -- >> we are doing audits. the mbta taking a hard look at worker overtime as a fair right comes down the track. families forced to give up their christmas trees, fake and real. why they say it is not about santa. it is about safety. and we have shown you video of heather: we all know traveling during the holidays can be stressful, but there is a new program and it is offering up a chance to help you relax with the help of a furry friend. phil: newscenter 5' s erika tarantal has a closer look at -- closer look. >> is wonderful. just fabulous. reporter: and you program designed to have a positive effect on anyone traveling this holiday season. from the little to the very large, the professionally trained c