Shortly after crew wakeup, Canadian Space Agency astronaut Chris Hadfield and Scott Parazynski began suiting up for the six and a half hour space walk that marks the 19th devoted to the assembly of the ISS and the 63rd in the history of the shuttle program. Hadfield will be wearing a spacesuit with red stripes around the legs, while Parazynski's suit will have no markings. John Phillips will serve as the in-cabin quarterback for the space walk as Pilot Jeff Ashby and European Space Agency astronaut Umberto Guidoni operate the shuttle's robotic arm to install the new arm on the outside of the Destiny laboratory.
Hadfield and Parazynski will connect cables to give the arm power and allow it to accept computer commands from the lab. They will unbolt the arm from the pallet, then unfold its two booms and tighten bolts to make them rigid. The space walkers also will install a UHF antenna on Destiny.
The Space station's Expedition Two crewmembers Jim Voss and Susan Helms will power up the arm from the Robotic Work Station inside Destiny, checking connections made by the space walkers.
A second space walk is scheduled for Tuesday, and will focus on establishing permanent power connections between the 57.7 foot-long arm and station and running it through a thorough checkout.
The shuttle crew was awakened earlier this morning by Canadian Stan Roger's "Take It From Day to Day" played for Hadfield in honor of the space walk - the first ever by a Canadian. The Expedition Two crew was awakened shortly after the shuttle crew.
Endeavour's cabin pressure will be increased to match that of the station during the space walk leading toward opening of the hatches between the shuttle and station Monday morning. Endeavour docked with the station at 8:59 a.m. Saturday followed soon after by entrance into the docking port on the station to retrieve some tools for use during today's space walk. The shuttle crew left behind four water containers, fresh food, computer equipment and IMAX camera film for the station crew.