BOSTON, MA - APRIL 15: An American flag sits stuck in the grass during a candlelight vigil for the one-year anniversary of the Boston Marathon bombings at Garvey Park on April 15, 2014 in Boston, Massachusetts. Last year, two pressure cooker bombs killed three and injured an estimated 264 others during the Boston marathon, on April 15, 2013.  (Photo by Jared Wickerham/Getty Images)