Audit Committee Compensation Committee Nominating and Corporate Governance Committee Science and Technology Committee Thomas G. Wiggans Compensation Committee Nominating and Corporate Governance Committee Bettina Cockroft Audit Committee Science and Technology Committee William H. Carson M.D Compensation Committee Science and Technology Committee Jung E. Choi Compensation Committee Science and Technology Committee Muneer Satter Audit Committee Nominating and Corporate Governance Committee Will Waddill Audit Committee Nominating and Corporate Governance Committee = Chairperson = Member = Chairman of the Board