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KENNEDY SPACE CENTER, FLA. -- Astronauts Salizhan Sharipov and Michael Fincke look over hardware on the Node 2 module in the Space Station Processing Facility. They and other astronauts 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