Torley Endowed Chair and Professor in Composite Materials, University of Dayton, Department of Chemical and Materials Engineering, 2005- Director, Materials and Manufacturing Directorate, Air Force Research Laboratory, 1998-2005 Associate Director, Manufacturing Technology and Affordability, Air Force Research Laboratory, 1997-1998 Director, Manufacturing Technology Directorate, Air Force Research Laboratory, 1997-1998 Chief, Nonmetallic Materials Division, Materials Directorate, Air Force Research Laboratory, 1992-1997 Adjunct Professor, University of Dayton, Department of Chemical and Materials Engineering, 1978-2005