John Roberts joined the Board in August 2004. Mr. Roberts served as Global Managing Partner for PricewaterhouseCoopers LLP from 1998 until his retirement in June 2002. From 1994 to 1998, Mr. Roberts served as Chief Operating Officer of Coopers & Lybrand, which merged with Price Waterhouse in 1998. He currently serves on the boards of directors and audit committees of Armstrong World Industries, Inc. and Safeguard Scientifics, Inc. and the board of trustees and audit committee of the Pennsylvania Real Estate Investment Trust. He is a Member of the American Institute of Certified Public Accountants.