(02/02/2002) -- In the Orbiter Processing Facility, STS-110 Pilot Stephen Frick checks a window in the cockpit of Atlantis during Crew Equipment Integration Test activities. The mission, 13th assembly flight to the International Space Station, includes the Integrated Truss Structure S0. The ITS S0 is the center segment on the Space Station, part of the 300-foot (91-meter) truss attached to the U.S. Lab. By assembly completion, four more truss segments will attach to either side of the S0 truss. STS-110 is scheduled to launch April 4, 2002