Barry Wilmore served as a pilot during STS-129 in 2009, the 31st shuttle flight to the space station. That mission delivered about 30,000 pounds of gear to the orbital laboratory.
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Russian cosmonaut Elena Serova is Expedition 41/42 flight engineer.
Alexander Samoukutyaev served as a flight engineer for Expeditions 27 and 28.
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Terry Virts served as pilot for STS-130 the shuttle mission that delivered the Tranquility and cupola modules to the space station.
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Samantha Cristoforetti was selected as a European Space Agency astronaut in May 2009 and completed the Astronaut Basic Training in November 2010.
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