A boy holds a model of the space shuttle Endeavour near the shuttle as it is moved to the California Science Center in Los Angeles on Saturday, Oct. 13, 2012. (AP Photo/Lucy Nicholson, Pool)

Associated Press
A boy holds a model of the space shuttle Endeavour near the shuttle as it is moved to the California Science Center in Los Angeles on Saturday, Oct. 13, 2012. (AP Photo/Lucy Nicholson, Pool)
A boy holds a model of the space shuttle Endeavour near the shuttle as it is moved to the California Science Center in Los Angeles on Saturday, Oct. 13, 2012. (AP Photo/Lucy Nicholson, Pool)
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