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August 16, 2011
On Discovery's middeck, one of the STS-114 crew members holds a piece of the gap filler material that had been protruding from between TPS tiles and retrieved the day before by Mission Specialist Stephen K. Robinson, during the third spacewalk of the flight. Robinson used his gloved fingers to pull out this gap filler and another one from Discovery's belly while carefully supported and maneuvered by the Canadian-built remote manipulator system, operated inside Discovery's cabin by astronauts Wendy B. Lawrence and James M. Kelly. Gap fillers like those Robinson removed are thin, coated Nextel fabric. The protruding gap fillers were identified in photos taken by Station crewmembers using telephoto lenses as Discovery did a slow back flip about 600 feet below before docking.

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