“Under the Pentastar” is a quick video recap of significant events at Chrysler Group LLC over the past week. The top stories for the week ending September 22, 2011, include: A new television commercial debuted, touting the 2012 Chrysler 300; Chrysler Group LLC is recognized for its diversity; and the national labor contract between Chrysler Group LLC and the UAW has been extended through Oct. 19.