International Space Station Expedition 11 Moving Full Speed

Commander Sergei Krikalev and Flight Engineer John Phillips are moving full speed ahead into their Expedition 11 maintenance and science work aboard the International Space Station.
Krikalev replaced a liquid processing component of the Russian Elektron oxygen generation system yesterday. It failed almost immediately prompting additional troubleshooting today. The system separates hydrogen and oxygen molecules from water, and injects the oxygen into the Station's atmosphere. Oxygen is being supplied as needed from tanks in the Progress cargo ship docked with the Station. It is one of several oxygen supplies available.