Soyuz TMA-4 launched Gennady Padalka, Michael Fincke, and ESA astronaut Andre Kuipers to the International Space Station. Padalka and Fincke formed Expedition 9, while Kuipers conducted the DELTA visiting mission and returned on Soyuz TMA-3. TMA-4 remained as the station lifeboat and later returned Padalka, Fincke, and Yuri Shargin to Kazakhstan.