Mr. Bostock has served as Chairman of the Board since January 2008 and has been a member of the Board of Directors since May 2003. He has served as Vice Chairman of the Board of Delta Air Lines, Inc. since October 2008, as a principal of Sealedge Investments, LLC, a diversified private investment company, since 2002 and as Chairman of the Board of The Partnership for a Drug-Free America, a not-for-profit corporation creating advertising to reduce the use of illicit drugs in the United States, since October 2002. He also served as Chairman of the Board of Northwest Airlines Corporation, the parent of Northwest Airlines, Inc., from May 2007 until its merger with Delta Air Lines, Inc. in October 2008 and as the Chairman of the Board of the Committee for Economic Development, a Washington, D.C.-based public policy group, from 2002 to 2005. Mr. Bostock served as Chairman of the Board of BCom3 Group, Inc., a global advertising agency group (now part of Publicis Groupe S.A.), from January 2000 to mid 2001. From July 1990 to January 2000, Mr. Bostock served as Chairman and Chief Executive Officer of D'Arcy Masius Benton & Bowles, Inc., an advertising and marketing services firm, and its successor company, The MacManus Group, Inc. Mr. Bostock also serves as a director of Morgan Stanley. Mr. Bostock holds a Bachelor's degree from Duke University and an M.B.A. from Harvard University.

Mr. Chapple has served as a member of the Board of Directors since August 2008. He has served as President of Hawkeye Investments LLC, a privately-owned equity firm investing primarily in telecommunications and real estate ventures, since October 2006. Prior to forming Hawkeye, Mr. Chapple served as President, Chief Executive Officer and Chairman of the Board of Nextel Partners from January 1998 to June 2006, when the company was purchased by Sprint Communications. From 1995 to 1997, Mr. Chapple was the President and Chief Operating Officer for Orca Bay Sports and Entertainment in Vancouver, B.C., which at the time owned and operated Vancouver's National Basketball Association and National Hockey League sports franchises in addition to the General Motors Place sports arena. From 1988 to 1995, he served as Executive Vice President of Operations for McCaw Cellular Communications and subsequently AT&T Wireless Services following the merger of those companies. Mr. Chapple serves on the board of directors of several telecommunications companies: Cbeyond, Inc. (Nasdaq: CBEY) an integrated service telephone company, Leap Wireless International, Inc. (Nasdaq: LEAP) a provider of wireless communications services, and privately held companies Seamobile Enterprises which provides integrated wireless services at sea and Telesphere Networks, Inc., a VOIP (voice over internet protocol) company providing service in 44 states. In addition, he has served as a member of Syracuse University's board of trustees since 2005 and as Chairman since 2008. Mr. Chapple holds a Bachelor's degree from Syracuse University and completed Harvard University's Advanced Management Program.

Mr. Joshi has served as a member of the Board of Directors since July 2005. Mr. Joshi was elected Executive Vice President of the Imaging and Printing Group at Hewlett-Packard Company ("HP") in 2002 after serving as Vice President since January 2001. Mr. Joshi also served as Chairman of Phogenix Imaging LLC, a joint venture between HP and Eastman Kodak Company, from 2000 until May 2003. Prior to that, Mr. Joshi was Vice President and General Manager of Inkjet Systems. Mr. Joshi holds a Master's degree in electrical engineering from Ohio State University.

Mrs. Wilderotter has served as a member of the Board of Directors since July 2007. She has served as Chairman of the Board of Frontier Communications Company since December 2005 and as Chief Executive Officer and President and as a director since November 2004. From February 2004 to November 2004, Mrs. Wilderotter was Senior Vice President of World Wide Public Sector at Microsoft Corporation, and from November 2002 to February 2004, she was Microsoft's Senior Vice President, Business Strategy. From 1997 to 2002, she served as President, Chief Executive Officer and director of Wink Communications, Inc., an interactive television technology company. From 1995 to 1997, Mrs. Wilderotter was the Executive Vice President of National Operations and Chief Executive Officer of the Aviation Communications Division in the United States at AT&T Wireless. From 1991 to 1995, Mrs. Wilderotter was Senior Vice President of McCaw Cellular Communications, Inc. and also served as McCaw's Regional President of the California/Nevada/Hawaii Region. McCaw became AT&T Wireless upon AT&T's acquisition of McCaw. Mrs. Wilderotter also serves as a director of Tribune Company, a media company operating businesses in broadcasting, publishing and on the Internet, Xerox Corporation, and The Procter & Gamble Company. Mrs. Wilderotter holds a Bachelor's degree from The College of the Holy Cross.