Bernard W. Aronson has been a member of our board of directors since December 2004. Mr. Aronson is the founder and Managing Partner of ACON Investments, LLC, a private equity firm, and has served in this position since 1996. Prior to that, Mr. Aronson served as International Advisor to Goldman, Sachs & Co. and as Assistant Secretary of State for Inter-American Affairs. Mr. Aronson serves as a Director of Liz Claiborne, Inc., Royal Caribbean Cruises Ltd., Chroma Oil & Gas, LP, Northern Tier Energy Inc. and The Nature Conservancy (Maryland/District of Columbia Chapter). Mr. Aronson served as a Director of Mariner Energy, Inc. from 2004 until 2010. Mr. Aronson is a member of the Council on Foreign Relations and serves on a number of not-for-profit boards, including the National Democratic Institute for International Affairs.