Two workers on Launch Pad 39B maneuver a cart along the orbiter access arm toward the White Room.

Two workers on Launch Pad 39B maneuver a cart along the orbiter access arm toward the White Room. The cart contains the extravehicular mobility units (or spacewalk suits) to be used on mission STS-116. The suits will be stored inside Space Shuttle Discovery, which has access from the White Room. Launch of Discovery is scheduled for 9:35 p.m. Dec. 7. The crew will deliver the P5 integrated truss to the International Space Station and install it during one or more extravehicular activities. Photo credit: NASA/Jack Pfaller