At Marshall Space Center's building 4708 in the high-bay clean room, astronauts George Zamka (right), STS-130 commander; along with astronauts Nicholas Patrick (foreground) and Robert Behnken, both mission specialists, are seen with a 1G stand that simulates geometrically the interfaces of the ammonia hoses between node 3 and the U.S. lab on orbit. The three crewmembers are pulling the ammonia blanket from their EVA bag to verify how they would perform the installation procedure on orbit.