STS-126 Commander Christopher Ferguson (L) answers a question during a news conference with Endeavour crewmembers (L-R) Pilot Eric Boe (partially obscured), mission specialists Donald Pettit, Stephen Bowen and Heidemarie Stefanyshyn-Piper at the Johnson Space Center in Houston November 3, 2008. Dubbed the "Extreme Home Improvement" mission, Endeavour, scheduled for launch November 13th will deliver seven tons of supplies and equipment and will perform four spacewalks to repair the International Space Station's solar arrays. REUTERS/Donna Carson (UNITED STATES)