S127-E-006881 (18 July 2009) --- Onboard Endeavour's forward flight deck, astronaut Christopher Cassidy, STS-127 mission specialist, looks over a reference manual as he plays an intravehicular support role to two space-walking astronauts (Dave Wolf and Tim Kopra), out of frame. The July 18 extravehicular activity kicks off a series of five spacewalks scheduled over the next several days.
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