Dave Davies reports Thomas Lindenfeld, a high-profile campaign consultant, is getting probation for helping Chaka Fattah steal public funds. Maiken Scott looks into abnormal cancers being found in people who had contact with the rubble from the World Trade Center after the 9/11 attacks. Joe Hernandez brings the story of a fitness program designed to help veterans coping with PTSD. In this week’s edition of What Are We Thinking?, Frank Newport, editor-in-chief at the Gallup Poll, speaks with Newsworks Tonight’s Dave Heller about how Americans’ concerns over terrorism fluctuate over time. Elizabeth Perez Luna reports on a French choreographer’s contribution to this year’s Philadelphia Fringe Festival.