Space Station Live: From Underwater, The NEEMO Commander.

In the midst of a 20-day mission on the Aquarius underwater laboratory, ESA (European Space Agency) astronaut Luca Parmitano talks with NASA Commentator Pat Ryan about the NEEMO (NASA Extreme Environment Mission Operations) mission he is commanding. Parmitano and five crewmates are using the underwater laboratory to simulate being in space away from Earth, testing spacewalking tools and techniques, protocols for communications during periods of long transmission delays, and assessing other new hardware being developed for use on future missions into deep space.