It has been one year since twin bombs exploded near the finish line of the annual Boston Marathon, killing three people and injuring more than 260 others.
Roses hang on a lamp post near the site of the second bomb blast on the one-year anniversary of the Boston Marathon bombings iN Massachusetts, April 15, 2014.
Kevin Brown puts up a handmade memorial for victims of the 2013 Boston Marathon bombings near the race's finish line in Massachusetts, April 15, 2014.
Family members of the victims of the 2013 Boston Marathon bombings are joined by Massachusetts Governor Deval Patrick (wearing a baseball cap, left) and Boston Mayor Marty Walsh (3rd right) as they walk to the finish line, April 15, 2014.
Security personnel walk across the Boston Marathon finish line prior to a remembrance ceremony for family members and survivors of the 2013 Boston Marathon bombing, on Boylston Street, April 15, 2014.