Discovery astronauts Steve Bowen and Alvin Drew checked off the last item on their long to-do list and wrapped their mission's second and final spacewalk Wednesday afternoon. Their work was briefly delayed by a spacesuit leak due to a bad o-ring. "Part of the safety process calls for a full leak check while inside the airlock before ever going into space," said NASA's Michael Curie. "No one ever was in any danger."
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