Astronaut Christopher Cassidy stands suited and almost ready to participate in the flight day 10 spacewalk.

Astronaut Christopher Cassidy stands suited and almost ready to participate in the July 24 flight day 10 spacewalk. He and astronaut Tom Marshburn (out of frame) are also scheduled to wrap up the EVA work with a fifth overall session on July 27. The two mission specialists are part of a 13-member aggregation of astronauts and cosmonauts currently onboard the orbital outpost while its crew of six plays host to Endeavour's crew of seven.