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NASA ASTRONAUT CHRIS CASSIDY, A FLIGHT ENGINEER FOR INTERNATIONAL SPACE STATION EXPEDITION 36, VISITED THE MARSHALL SPACE FLIGHT CENTER JAN. 22 TO THANK MARSHALL TEAM MEMBERS FOR THEIR SUPPORT OF NASA’S ONGOING MISSION IN SPACE; TO HANG A MISSION PLAQUE IN THE PAYLOAD OPERATIONS INTEGRATION CENTER; AND TO GREET WORKERS, SIGN AUTOGRAPHS AND TALK ABOUT HIS EXPERIENCES DURING HIS FIVE AND A HALF MONTHS ON ORBIT.