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Inside the payload changeout room on the Rotating Service Structure, Launch Pad 39B, the Multi-Purpose Logistics Module Leonardo is ready for the payload ground-handling mechanism (PGHM) to remove it from the canister. A worker beneath the MPLM checks equipment. Leonardo then will be transferred into Space Shuttle Discovery’s payload bay. One of Italy’s major contributions to the International Space Station program, Leonardo is a reusable logistics carrier. It is the primary delivery system used to resupply and return Station cargo requiring a pressurized environment. Leonardo is the primary payload on mission STS-102 and will deliver up to 10 tons of laboratory racks filled with equipment, experiments and supplies for outfitting the newly installed U.S. Laboratory Destiny. STS-102 is scheduled to launch March 8 at 6:45 a.m. EST.