Two Soyuz, actually. They need two because the ISS now has a six person crew and one Soyuz has only space for three people. Also, I had no idea until just now

Two Soyuz, actually. They need two because the ISS now has a six person crew and one Soyuz has only space for three people. Also, I had no idea until just now that each seat is for a specific person, because the Soyuz seat is custom-fitted for its user to protect them against the forces involved. http://www.nasa.gov/centers/johnson/astronauts/journals_anderson_ch6.html http://www.nasa.gov/centers/johnson/astronauts/journals_ande...