NASA astronaut Jeffrey Williams and Guy Laliberte center are pictured in the Zvezda Service Module of the International Space Station.

NASA astronaut Jeffrey Williams (second left), Expedition 21 flight engineer; and spaceflight participant Guy Laliberte (center) are pictured in the Zvezda Service Module of the International Space Station, shortly after arriving onboard a Soyuz spacecraft along with Russian cosmonaut Maxim Suraev (out of frame), Expedition 21 flight engineer. Also pictured are NASA astronauts Nicole Stott and Michael Barratt (right background); along with European Space Agency astronaut Frank De Winne, all Expedition 20 flight engineers.