NASA Administrator Sean O’Keefe is set to resign this week from the agency, after heading it up for three years. President Bush is considering five men to take over, with the former leader of the Pentagon Missile Defense Agency, Air Force Lt. Gen. Ronald Kadish, widely considered to be the top candidate. Other people being considered for the position are former Congressman Robert Walker and former shuttle astronauts Ron Sega, Charles Bolden and Robert Crippen. O’Keefe is said to be considering a new position as the chancellor of Louisiana State University.
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