The Space Shuttle orbiter Discovery is rolled over to the Vehicle Assembly Building for temporary storage to make room in the Orbiter Processing Facility 2 for the orbiter Atlantis. Discovery's next mission is STS-91, the ninth and last Shuttle/Mir docking mission. During the nine-day mission, now targeted for May 1998, Discovery will perform its first docking mission and return U.S. astronaut Andrew S.W. Thomas to Earth after his four-month stay, which will begin when he transfers to the Russian Space Station during the STS-89 mission in January 1998.