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An officer who survived a shootout with the Boston Marathon bombing suspects has died after an on-duty medical emergency.
Officials say 28-year-old Officer Dennis Simmonds died Thursday after being stricken in the gym at the Boston Police Academy.
Police say Simmonds had been involved in the shooting with the alleged bombers in Watertown. For his actions he earned the department's highest honor for bravery and was scheduled to visit the White House next month.
Simmonds was a six-year veteran assigned to the Youth Violence Strike Force.