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Associated Press
NYPD Commissioner Bill Bratton, right, stands beside Mayor Bill de Blasio as he wipes his eye during a news conference at Woodhull Medical Center, Saturday, Dec. 20, 2014, in New York.  An armed man walked up to two New York Police Department officers sitting inside a patrol car and opened fire Saturday afternoon, killing one and critically wounding a second before running into a nearby subway station and committing suicide, police said. (AP Photo/John Minchillo)

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