Dry run for first of two EVAs

View of NASA astronaut Chris Cassidy (left) and European Space Agency astronaut Luca Parmitano (right), Expedition 36 flight engineers, preparing for a dry run in the International Space Stations Quest airlock in preparation for the first of two sessions of extravehicular (EVA) scheduled for July 9 and July 16. Both have donned their EMUs. Astronaut Karen Nyberg, Expetition 36 flight engineer, is visible in the center.