ISS, the STS-121 crew conducted three spacewalks. The women were not considered for this activity; when NASA trimmed the space suit budget in the 1990s, small sizes were omitted. Women astronauts were assigned to other tasks like operating the robotic arms. From the Destiny laboratory on the ISS, Nowak operated the robotic arm whose installation she had overseen as CAPCOM years before. It was more challenging to operate than the one on the Space Shuttle, since it was larger and had an extra joint. Some of trash, experiment results and broken equipment were packed into Leonardo, and Nowak and Wilson used the robotic arm to re-stow the module in Discoverys cargo bay. It was then used to make a final check of the Space Shuttle to ensure that no damage had been done by micrometeorites or space debris. Discovery undocked from the ISS and commenced its two-day return to Earth. In all, she spent 12 days 18 hours and 36 minutes in space, during which she traveled . Discovery landed at the Shuttle Landing Facility at the Kennedy Space Center at 09:14 on July 17. Homecoming As was usual, the six crew members of STS-121 embarked on a series of publicity events and interviews. They attended X Games XII at the Home Depot Center in Los Angeles from August 3 to 6, and the Houston Astros game on August 14 at Minute Maid Park, where the crew met pitcher Roger Clemens and threw ceremonial first pitches. On September 9, Nowak attended a tailgate party at the Naval Academy versus University of Massachusetts football game, where she gave her classmates the Class of 1985 flag she had carried on the Space Shuttle and signed photographs of herself. At half time she presented Annapolis with a Navy jersey she had carried on board Discovery. She gave a long interview with the Ladies' Home Journal for its Mother's Day issue and presented awards at NASA's Stennis Space Center. She went back to Luxmanor Elementary School and Tilden Middle School where she spoke to the children and attended celebrations at Annapolis for the 30th anniversary of its admission of women, during which she gave a presentation as part of the Academy's Forrestal Lecture Series. In December, the STS-121 crew flew to the UK, where they visited the University of Edinburgh and the National Space Centre in Leicester, and spoke at the University of Leeds,