Workers attach an overhead crane to the Multi-Purpose Logistics Module Leonardo and the carrier behind it sitting in Discovery's bay.

In the Orbiter Processing Facility bay 2, workers attach an overhead crane to the Multi-Purpose Logistics Module Leonardo and the integrated cargo carrier behind it sitting in Discovery’s payload bay. The MPLM has just returned from its first round trip to the International Space Station on mission STS-102. Attached to the length of the payload bay, in front of Leonardo, is the robotic arm that was used to remove and position Leonardo on the ISS. Leonardo will be lifted from the payload bay and transferred to the SSPF to prepare it for future missions. The MPLM serves as a cargo van, carrying equipment and supplies to the Space Station