NASA Kennedy Space Center Director Bob Cabana, left, and NASA Administrator Charles Bolden walk to welcome home the crew of the space shuttle Endeavour shortly after it and its crew landed, Friday, July 31, 2009 at NASA's Kennedy Space Center in Cape Canaveral, Florida, completing a 16-day journey of more than 6.5 million miles. Endeavour delivered the final segment to the Japan Aerospace Exploration Agency's Kibo laboratory and a new crew member to the International Space Station.