S127-E-007251 (20 July 2009) --- Astronaut Christopher Cassidy, STS-127 mission specialist, watches a checklist for extravehicular activity float in front of him on Endeavour's flight deck. Cassidy was inside the cabin supporting the spacewalk of two crewmates on July 20, but he just may have been anticipating his own first spacewalk in two days.
Date July 20, 2009