JSC2009-E-215174 (October 2009) --- Computer-generated artist?s rendering of the International Space Station as of Oct. 2, 2009. Soyuz 20 (TMA-16) docks to the Zvezda Service Module?s aft port, bringing NASA astronaut Jeffrey Williams, Expedition 21 flight engineer; Russian cosmonaut Maxim Suraev, Soyuz commander and flight engineer; and spaceflight participant Guy Laliberte. Soyuz 18 (TMA-14) is linked to the Pirs Docking Compartment and Soyuz 19 (TMA-15) remains docked to the Zarya nadir port. The Japanese H-II Transfer Vehicle (HTV) is berthed to the Harmony node?s nadir port.