Workers attach an overhead crane to the Lightweight Multi-Purpose Experiment Support Structure Carrier or LMC which holds an ammonia tank assembly.

In the Space Station Processing Facility at NASA's Kennedy Space Center in Florida, workers attach an overhead crane to the Lightweight Multi-Purpose Experiment Support Structure Carrier, or LMC, which holds an ammonia tank assembly. Part of the payload for space shuttle Discovery's STS-128 mission to the International Space Station, the carrier will be weighed and then installed in the payload canister. The STS-128 flight also will carry science and storage racks to the space station on Discovery. Launch of Discovery is targeted for Aug. 18. Photo credit: NASA/Tim Jacobs