Cassidy,Marshburn,and Wolf in the MDDK during STS-127 / Expedition 20 Joint Operations

S127-E-006967 (19 July 2009) --- Astronauts Christopher Cassidy (left), Dave Wolf (right)and Tom Marshburn (bottom), all STS-127 mission specialists, share a moment shaking hands with one another on the mid deck of the Space Shuttle Endeavour. Tomorrow Wolf and Marshburn will share more than a few moments performing a spacewalk to perform work on the adjoined International Space Station. Then on flight day 10, Marshburn and Cassidy will perform the fourth of five scheduled space walks.