President Obama says if America wants a strong, growing economy, it needs robust, growing factories. In Pittsburgh Friday, Obama launched a new partnership with businesses and universities. It's designed to give a boost to the manufacturing sector in hopes that factories will then offer more, good-paying jobs. The announcement capped a week in which Obama also began winding down the war in Afghanistan and tip-toed around the fight over same-sex marriage. NPR's Scott Horsley reports.