In Orbiter Processing Facility bay 2 at NASA's Kennedy Space Center in Florida, workers attach a tool to lift the replacement window for space shuttle Endeavour. Endeavour is the designated launch vehicle for the STS-127 mission. The Japanese Experiment Module's Experiment Logistics Module-Exposed Section, or ELM-ES, is part of the payload on the mission, targeted for launch on May 15. Photo credit: NASA/Tim Jacobs
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