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You're watching NASA Direct. Next on the NASA Space Shuttle Status Report: Getting ready - Orbiter Discovery gets ready for NASA's 18th International Space Station flight. Close behind - Atlantis is also preparing for flight at Kennedy Space Center. And orbiter Endeavour sports a partially new paint job. The NASA Space Shuttle Status Report starts right now. I'm Mark Ross, NASA test director, and this is the NASA Space Shuttle Status Report. Topping NASA's orbiter news this week: In Orbiter Processing Facility Bay 3, work continues progressing for Discovery's second Space Shuttle return-to-flight test mission, STS-121. The remote manipulator system, or space shuttle arm, that was removed from orbiter Atlantis is now installed on Discovery. The arm has special instrumentation to gather data from the STS-121 mission. Also, a high-tech, post-flight inspection of Discovery's wing leading edge reinforced carbon-carbon panels is now complete. A technique known as 'thermography' was used to search for microscopic flaws in the orbiter's panels. The inspection revealed two areas that will need repair prior to the next flight. And new gap filler installation procedures are now being consider