Gary M. Pfeiffer retired in 2006 as the Senior Vice President and Chief Financial Officer of E.I. du Pont de Nemours and Company. Mr. Pfeiffer joined DuPont in 1974, where he held positions of increasing responsibility in finance and international operations, as well as in various DuPont divisions. Mr. Pfeiffer is a director of InterNAP Network Services Corporation and Talbots, Inc. Mr. Pfeiffer has been a director of Quest Diagnostics since December 2004.