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KENNEDY SPACE CENTER, FLA. -- Walking through the Space Station Processing Facility are astronauts Frank DeWinne, Michael Fincke and Tim Kopra. They are familiarizing themselves with the various elements to be installed on the International Space Station on future spaceflights. With construction of the Space Station the primary focus of future shuttle missions, astronaut crews will be working with one or more of the elements and hardware already being processed in the SSPF. Photo credit: NASA/Kim Shiflett