KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, Launch Director Mike Leinbach (left) welcomes STS-116 Pilot William Oefelein upon his arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, STS-116 Mission Specialist Joan Higginbotham poses for media representatives following her arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-116 Mission Specialist Robert Curbeam arrives at the Shuttle Landing Facility aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, he and other crew members will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, STS-116 Mission Specialist Nicholas Patrick makes some remarks to media representatives following his arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, members of the STS-116 crew address media representatives on hand for their arrival at KSC aboard T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. From left are Mission Specialist Joan Higginbotham; Pilot William Oefelein; Mission Specialist Robert Curbeam; and Mission Specialist Christer Fuglesang, a Swedish astronaut representing the European Space Agency (at the microphone). On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, Launch Director Mike Leinbach welcomes (from left) STS-116 Mission Specialists Joan Higginbotham, Robert Curbeam and Commander Mark Polansky upon their arrival at KSC aboard T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, STS-116 Pilot William Oefelein addresses media representatives on hand for his arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- STS-116 Commander Mark Polansky arrives at the Shuttle Landing Facility aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, he and other crew members will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- Media representatives await the arrival of the STS-116 crew at the Shuttle Landing Facility. On this mission, the crew will deliver another truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Launch of Discovery is scheduled for 9:35 p.m. Dec. 7. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, Launch Director Mike Leinbach (right) welcomes STS-116 Mission Specialist Sunita Williams upon her arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. Williams will join Expedition 14 in progress aboard the International Space Station as a flight engineer. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, members of the STS-116 crew address media representatives on hand for their arrival at KSC aboard T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. From left are Mission Specialist Joan Higginbotham; Pilot William Oefelein; Mission Specialists Robert Curbeam, Christer Fuglesang representing the European Space Agency, Nicholas Patrick, and Sunita Williams joining Expedition 14 in progress on the International Space Station; and Commander Mark Polansky (at the microphone). On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, the STS-116 crew poses for media representatives on hand for their arrival at KSC aboard T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. From left are Mission Specialist Joan Higginbotham; Pilot William Oefelein; Mission Specialists Robert Curbeam, Christer Fuglesang representing the European Space Agency, Nicholas Patrick, and Sunita Williams joining Expedition 14 in progress on the International Space Station; and Commander Mark Polansky. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, Launch Director Mike Leinbach welcomes members of the STS-116 crew upon their arrival at KSC aboard T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. From left are Leinbach, Pilot William Oefelein, Mission Specialist Christer Fuglesang representing the European Space Agency, Mission Specialists Robert Curbeam and Nicholas Patrick, Commander Mark Polansky (back to camera) and Mission Specialist Sunita Williams joining Expedition 14 in progress on the International Space Station. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett

KENNEDY SPACE CENTER, FLA. -- At the Shuttle Landing Facility, STS-116 Mission Specialist Christer Fuglesang, a Swedish astronaut representing the European Space Agency, poses for media representatives following his arrival at KSC aboard a T-38 jet aircraft for the launch of Space Shuttle Discovery on Dec. 7. On the mission, the STS-116 crew will deliver truss segment, P5, to the International Space Station and begin the intricate process of reconfiguring and redistributing the power generated by two pairs of U.S. solar arrays. The P5 will be mated to the P4 truss that was delivered and attached during the STS-115 mission in September. Photo credit: NASA/Kim Shiflett