[img]http://www.nasa.gov/images/content/160328main_exp22_undock.jpg[/img] Image above: The Soyuz TMA-16 spacecraft carrying Expedition 22 crew members Jeff Williams and Maxim Suraev undocks from the Poisk module. Credit: NASA TV Expedition 22 Commander Jeff Williams and Flight Engineer Maxim Suraev have completed their mission aboard the International Space Station after 167 days. They parachuted to a landing in their Soyuz TMA-16 descent module at 7:24 a.m. EDT in Kazakhstan. Staying behind are Flight Engineers Soichi Noguchi and T.J. Creamer and new Expedition 23 Commander Oleg Kotov. Expedition 23 officially began its increment when Williams and Suraev undocked at 4:03 a.m. from the Poisk Mini-Research Module. The trio, who will stay until June, joined Williams and Suraev after arriving in their Soyuz TMA-17 spacecraft in December 2009.