
The payload is also on the minds of Discovery's astronauts as they review installation procedures for the Express Logistics Carrier-4, a high-tech platform that will store spare parts on the outside of the International Space Station. The shuttle will take the platform and the Permanent Multipurpose Module to the station during the mission.
During space shuttle Discovery's final spaceflight, the STS-133 crew members will take important spares to the International Space Station along with the Express Logistics Carrier 4. Discovery is being readied for flight inside Kennedy's orbiter processing facility while its solid rocket boosters are stacked inside the nearby Vehicle Assembly Building. STS-133 is slated to launch in September.