(03/21/2001) --- Bill Shepherd looks at launch photos following a post-landing interview in the Operations and Checkout Building about his stay as commander on the International Space Station and return to Earth aboard Discovery. Discovery returned from mission STS-102, landing at KSC March 21. Part of the STS-102 mission was to take the Expedition Two crew to the Space Station and exchange crews. Shepherd handed over command to cosmonaut Yury Usachev, who will reside on the Station for the next four months with astronauts Susan Helms and James Voss