Mr. Warren is Chief Executive Officer and Chairman of the Board of Directors of Energy Transfer Partners, L. P. (ETP). Mr. Warren also serves as Chairman of the Board of Directors of the general partner of Energy Transfer Equity, L. P. (ETE), Chief Executive Officer of the general partner of ETC OLP (subsidiary that owns ETP's midstream operations), and Chief Executive Officer and Chairman of the Board of the general partner of ETC Holdings, L. P (owns interest in ETE). Prior to the combination of the operations of ETP and Heritage Propane in 2004, Mr. Warren served as Vice President of the general partner of ET Company I, Ltd., the entity that operated ETP's midstream assets before it acquired Aquila, Inc's midstream assets, having served in that capacity since 1996. From 1996 to 2000, Mr. Warren served as a director of Crosstex Energy, Inc. and from 1993 to 1996, he served as President, Chief Operating Officer and a director of Cornerstone Natural Gas, Inc. Mr. Warren has more than 20 years of business experience in the energy industry.