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NASA astronauts Shannon Walker, Expedition 25 flight engineer, and Doug Wheelock, Expedition 25 commander; have donned their Sokol (Russian word for 'Falcon') pressure suits and are pictured in the Russian MRM-1 module aboard the Earth-orbiting International Space Station. They, along with Russian cosmonaut Fyodor Yurchikhin, flight engineer, ingressed the docked Soyuz capsule to conduct pressurization and leak checks on their suits.