July 20, 2011
Astronaut Lee M. E. Morin, STS-110 mission specialist, works in tandem with astronaut Jerry L. Ross (out of frame), mission specialist, during the fourth and final scheduled session of extravehicular activity (EVA) for the STS-110 mission. The major task was the installation of a beam, which is called the Airlock Spur, between the Quest Airlock and the S0 (S-zero) Truss. The spur will be used by spacewalkers in the future as a path from the airlock to the truss. Ross and Morin also installed handrails onto the S0, partially assembled a platform, installed two floodlights and performed several other tasks preparing for upcoming assembly missions.
Topics: STS-110, Jerry L. Ross, Human spaceflight, Quest Joint Airlock, Lee M.E. Morin, STS-116, Extra-vehicular activity, Expedition 6, International Space Station