In Orbiter Processing Facility bay 2 is moved toward the open payload bay of Endeavour.

In Orbiter Processing Facility bay 2, the orbiter boom sensor system (in the background) is moved toward the open payload bay of Endeavour. The boom will be installed in the payload bay for launch. The orbiter is scheduled to fly on mission STS-118 to the International Space Station in the summer of 2007. It will deliver the third starboard truss segment, S5. Photo credit: NASA/Troy Cryder