Cassidy watches a checklist float in the FD during STS-127 / Expedition 20 Joint Operations

S127-E-007252 (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.