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Nancy J. Stone has served as Vice Chairman since March 2007 as a director of the Company since April 1989 and as President and Chief Operating Officer since January 1996. Ms. Stone served as Chief Financial Officer of the Company from July 1993 to December 1997 as well as from January 1990 to April 1992 and as Executive Vice President from July 1993 to December 1995. Ms. Stone also served as Vice President of Finance and Secretary of the Company from April 1987 to December 1989. Ms. Stone is a Certified Public Accountant in the State of Arizona. Ms. Stone received a B.A. degree in accounting and finance from Michigan State University and an M.B.A. degree from Arizona State University. | 