Halliburton Company's board of directors, elected David J. Lesar, 47, to the board of directors and named him the company's chairman of the board, president and chief executive officer. Lesar replaces Dick Cheney, who resigned to be George W. Bush's Republican Party vice presidential running mate. Lesar, currently the company's president and chief operating officer, joined Halliburton in 1993 as executive vice president and chief financial officer of the Halliburton Energy Services business unit. Subsequently, he served the company in a variety of senior management positions including executive vice president and chief financial officer of Halliburton Company and president and chief executive officer of Brown & Root, Inc.