. welcome back. i'm poppy harlow in today for carol costello. a scary incident for shoppers at a mall in fayetteville north carolina. a man carrying a rifle walked through a mall there. the man is under arrest and an investigation is underway. in eastern tennessee thousands of people who were evacuated from their homes may get the all clear to return to their homes after a freight train caught fire and derailed there. the train was carrying a chemical compound used to make plastic. and the flames released toxic fume into the air.