Las Vegas Sun - Photograph : Boston Police

January 17, 2018

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Boston Police, center, stand near the finish line of the Boston Marathon, behind, on Boylston Street, Monday, April 14, 2014, in Boston.

AP Photo/Steven Senne

Boston Police, center, stand near the finish line of the Boston Marathon, behind, on Boylston Street, Monday, April 14, 2014, in Boston.