'Marathon' chronicles tough road back for Boston bombing victims

By Scott Malone BOSTON (Reuters) - Three and a half years after the Boston Marathon bombing, many of the people who lost limbs in the attack are still struggling to heal their physical and emotional wounds. The first feature-length film about the April 15, 2013 attack and its aftermath, "Marathon: The Patriots Day Bombing," which debuts on HBO next week, tells their stories. The documentary opens with graphic video showing the explosion of two homemade pressure cooker bombs in the crowd at the race's finish line, the screams that rent the air and blood that coated the sidewalk.