Manufacturers and educators need to focus on students in elementary schools to develop the pool of innovators who will carry U.S. businesses through an era of disruptive change, the chairman and CEO of Rockwell Automation Inc. told business leaders Monday. Programs like the FIRST Lego League and the FIRST Robotics Competition, both supported by Rockwell, are the pathways to attract youths to manufacturing and overcome the biggest challenges facing industry, Keith Nosbusch said at a monthly meeting of the Greater Milwaukee Committee .