Mr. Lukens has been a director since August 2004. Mr. Lukens served as President and Chief Executive Officer of Stewart & Stevenson Services, Inc. until May 25, 2006 and prior to that served as its Chairman of the Board, from December 2002 to March 2004, and Interim Chief Executive Officer and President, from September 2003 to March 2004. He was also previously employed by Baker Hughes Incorporated from 1981 to January 2000, where he served as Baker Hughes' Chairman of the Board, President and Chief Executive Officer from 1997 to January 2000. In addition, he currently serves on the Board of Directors and the Audit Committee of NCI Building Systems, Inc. Mr. Lukens was a Certified Public Accountant with Deloitte Haskins & Sells for 10 years and received both his B.S. and M.B.A. degrees from Miami University of Ohio.
