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KENNEDY SPACE CENTER, FLA. -- After his arrival at NASA's Kennedy Space Center, STS-122 Mission Specialist Leland Melvin talks to the media about looking forward to a great flight. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett