General Richard B. Myers takes over as commander in chief of the North American Aerospace Defense Command (NORAD), commander in chief of the US Space Command, and commander of the Air Force Space Command. He replaces General Howell M. Estes III. [North American Aerospace Defense Command, 6/3/1998; Air Force News, 8/19/1998] Myers will serve in these positions until February 22, 2000, when he will be replaced by General Ralph E. Eberhart. [Air Force News, 2/22/2000] On 9/11, Myers will serve as the acting chairman of the Joint Chiefs of Staff. [Myers and McConnell, 2009, pp. 10]