Astronaut training. NASA Astronaut Peggy A. Whitson being helped into a training space suit prior to being submerged in the pool at the Neutral Buoyancy Laboratory (NBL) in Houston, Texas, USA. The suit is a version of the Extravehicular Mobility Unit (EMU) space suit worn during space missions. Whitson is the planned commander of Expedition 16, the sixteenth expedition to the International Space Station (ISS), which is scheduled to launch on October 6, 2007. Photographed on April 17th 2007.