Former U.S. Congresswoman Gabrielle Giffords, left, and her husband Mark Kelly, right, 

Former U.S. Congresswoman Gabrielle Giffords, left, and her husband Mark Kelly, right, NASA astronaut and commander of mission STS-134, pose for a picture at the Alpha Magnetic Spectrometer (AMS) Payload Operations and Command Center (POCC) at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva, Switzerland, Wednesday, July 25, 2012.  Giffords toured the European particle physics laboratory Wednesday, cheerfully facing reporters while surrounded by family and aides but saying little during her first trip abroad since being shot in the head in January of last year. Two days after riding a cable car up into the French Alps, Giffords accompanied her husband, retired astronaut Mark Kelly, on a visit to the European Center for Nuclear Research, which assembled a  US$2 billion cosmic ray detector that Kelly and his team of astronauts carried to the International Space Station.  (AP Photo/Keystone/Martial Trezzini)
Associated Press
Former U.S. Congresswoman Gabrielle Giffords, left, and her husband Mark Kelly, right, NASA astronaut and commander of mission STS-134, pose for a picture at the Alpha Magnetic Spectrometer (AMS) Payload Operations and Command Center (POCC) at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva, Switzerland, Wednesday, July 25, 2012. Giffords toured the European particle physics laboratory Wednesday, cheerfully facing reporters while surrounded by family and aides but saying little during her first trip abroad since being shot in the head in January of last year. Two days after riding a cable car up into the French Alps, Giffords accompanied her husband, retired astronaut Mark Kelly, on a visit to the European Center for Nuclear Research, which assembled a US$2 billion cosmic ray detector that Kelly and his team of astronauts carried to the International Space Station. (AP Photo/Keystone/Martial Trezzini)
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