In the Space Station Processing Facility, STS-115 Mission Specialists Daniel Burbank (left) and Steven MacLean (right) check out equipment during Crew Equipment Interface Test activities. MacLean is with the Canadian Space Agency. The mission will deliver the second port truss segment, the P3/P4 Truss, to attach to the first port truss segment, the P1 Truss, as well as deploy solar array set 2A and 4A. Launch on Space Shuttle Endeavour is scheduled for May 23, 2003.