Boston-4/15/13- Carlos Arredondo (left) climbs over the barricades on Boylston Street to get to the injured on the sidewalk at the site of the first bombing near the finish line at the Boston Marathon.
Boston-4/15/13- Carlos Arredondo (left) climbs over the barricades on Boylston Street to get to the injured on the sidewalk at the site of the first bombing near the finish line at the Boston Marathon.