BOSTON, MA - APRIL 20: Spectators line Hereford Street during the 119th Boston Marathon on April 20, 2015 in Boston, Massachusetts. (Photo by Maddie Meyer/Getty Images)
BOSTON, MA - APRIL 20: Spectators line Hereford Street during the 119th Boston Marathon on April 20, 2015 in Boston, Massachusetts. (Photo by Maddie Meyer/Getty Images)