keywords: nasa shuttle fleet estimated cost
text: NASA Says Fixing Space Shuttle Fleet Could Top \$2 Billion WASHINGTON (AP) -- NASA administrator Sean O'Keefe said Wednesday the cost of fixing all the problems with the space shuttle fleet could top \$2.2 billion - double the estimated price tag given to Congress a year ago.    O'Keefe, testifying before the Senate Commerce, Science and Transportation Committee, was pressed on whether that estimate again could rise...