6 of 25: New Jersey Governor Chris Christie, left, places a flag on a memorial site as friends and relatives of the victims of the Sept. 11 terrorist attacks on the World Trade Center attend a ceremony marking the 11th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site in New York, Tuesday, Sept. 11, 2012. (AP Photo/The Daily News, Todd Maisel, Pool) (AP Photo/ Todd Maisel)

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