Mr. Simpkins has served as a senior managing director of Blackstone since December 1999. From 1993 until the time he joined Blackstone, Mr. Simpkins was a principal at Bain Capital. Prior to joining Bain Capital, Mr. Simpkins was a consultant at Bain & Company in London and the Asia Pacific region. He currently serves on the board of directors of Vanguard Health Systems Inc. and Team Health L.L.C.

John Plant is president and chief executive officer of TRW Automotive, a $14.7 billion automotive supplier based in Livonia, Michigan. A leader in automotive safety systems, TRW employs some 66,300 people in approximately 200 major facilities around the world and is ranked among the top 10 automotive suppliers globally.

Prior to being named to his current position, Mr. Plant had been a co-member of the Chief Executive Office of TRW Inc. since 2001 and an executive vice president of TRW since the company's 1999 acquisition of Lucas Varity.

Previously, Mr. Plant was president of Lucas Varity Automotive and managing director of the Electrical and Electronic division from 1991 through 1997.

Mr. Plant is a member of the board of directors of the Automotive Occupant Restraints Council, a member of Henry Ford Health System Board and a vice chairman on the Kennedy Center Corporate Fund Board.

A graduate of the University of Birmingham with a Bachelor of Commerce degree in Economics, Accounting and Law, Mr. Plant is a Fellow of the Institute of Chartered Accountants.

Mr. Albaugh is currently president and chief executive officer of Boeing's Integrated Defense Systems and a member of the company's Executive Council. This $32.1 billion business unit includes Boeing's defense, government, intelligence, space and communications capabilities. Prior to his current position, Mr. Albaugh, who joined Boeing in 1975, held various executive positions, including president and chief executive of Space and Communications and president of Space Transportation. He is a fellow of the American Institute of Aeronautics and Astronautics; the Royal Aeronautical Society; an elected member of the International Academy of Aeronautics, the Aerospace Industries Association Board of Governors Executive Committee and other professional organizations.

Mr. Castaing is a consultant for Castaing & Associates. Mr. Castaing retired in 2000 as technical advisor to the Chairman of DaimlerChrysler Corporation. Prior to his retirement, Mr. Castaing spent thirteen years with Chrysler Corporation serving as Executive Vice President of Vehicle Engineering from 1988 to 1996 and subsequently ran Chrysler International Operations. From 1980 to 1987, Mr. Castaing was with American Motors where he was Vice President of Engineering and later Group Vice President Product and Quality, until Chrysler acquired that company. Mr. Castaing began his career with Renault as Technical Director for Renault Motorsport Programs. Mr. Castaing currently serves on the board of directors and audit committee of Amerigon Incorporated.

Mr. Friedman has served as a senior managing director of Blackstone since February 1999 and in addition as Chief Legal Officer of Blackstone since January 2003. From 1974 until the time he joined Blackstone, Mr. Friedman was a partner with Simpson Thacher & Bartlett LLP, a New York law firm. He currently also serves on the board of directors of Axis Capital Holdings Limited and on the Board of Directors of Northwest Airlines, Inc. (he is also audit committee chairman of Northwest).

Mr. Losh was interim chief financial officer of Cardinal Health from July 2004 until May 2005. He served as the Chairman of the Board of Metaldyne Corporation from October 2000 to April 2002. Prior to that, he was the Executive Vice President and Chief Financial Officer of General Motors Corp. from July 1994 to September 2000. At General Motors he served in a variety of operating and financial positions from 1964 to 2000. He currently also serves on the board of directors and Compensation, Finance, and Governance/Nominating committees of Aon Corporation, on the board of directors and audit committee of H.B. Fuller Company, AMB Property Corporation and Cardinal Health Inc. and on the Board of Directors and Audit, Compensation and Pricing Committees of Masco Corporation.

Ms. Miller founded in 2006 and became CEO of The Business Talent Group LLC, a privately held company providing top independent business talent to companies for project and interim executive assignments. She was a Venture Partner with Maveron, LLC from 2000 to 2006. From 1995 to 1999, Ms. Miller held a variety of executive positions, including Executive Vice President and Acting President and Chief Operating Officer, at Americast, a digital video and interactive services partnership of Ameritech, BellSouth, GTE, SBC, SNET and The Walt Disney Company. She also serves on the board of directors of Capella Education Company, a leading online university (NASDAQ).

Mr. O'Neill has been a Special Advisor at Blackstone since March 2003. Prior to that, he served as U.S. Secretary of the Treasury during 2001 and 2002 and was Chairman and Chief Executive Officer of Alcoa from 1987 through 1999. He retired as Chairman of Alcoa in 2000. He currently also serves on the board of directors of Celanese Corporation.