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May 23, 2014
(8 Dec. 2009) --- Russian cosmonaut Alexander Skvortsov (center), Expedition 23 flight engineer and Expedition 24 commander; Russian cosmonaut Mikhail Kornienko and NASA astronaut Tracy Caldwell Dyson, both Expedition 23/24 flight engineers, pose for a photo during a training session in an International Space Station mock-up/trainer in the Space Vehicle Mock-up Facility at NASA's Johnson Space Center. Skvortsov is holding the Expedition 23 logo.

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