AdvertisementPhotos: Boylston Street After The BlastsApril 17, 2013Jesse CostafacebookEmailView of the Boston Marathon finish line on Boylston St. (Jesse Costa/WBUR)Boston Marathon polyethylene heatsheets piled up at Clarendon and Newbury Streets. (Jesse Costa/WBUR)Caitlin Drown of Brewster leaves flowers at a memorial at Clarendon and Newbury Streets. (Jesse Costa/WBUR)Boston Police set up yellow tape across Dartmouth St. (Jesse Costa/WBUR)Army National Guardsmen standing at Mass Ave and Boylston St. (Jesse Costa/WBUR)Wheelchairs corralled at the medical tent on St James St. (Jesse Costa/WBUR)Close up of Memorial set up on Clarendon and Boylston Streets after police and opened the barricade at Berkley St. (Jesse Costa/WBUR)Leif Ruben of Back Bay props up flowers blown over by the wind at the Memorial at Berkeley and Boylston St. (Jesse Costa/WBUR)NBC Today Show host Matt Lauer news journalist Lester Holt prep to go on-air. (Joe Spurr/WBUR)Two Army National Guardsmen adjust a poster that is part of a memorial set up on Berkeley Street. (Jesse Costa/WBUR)Army National Guardsmen unload packed lunches for security personnel working on and around the Boylston Street crime scene. (Jesse Costa/WBUR)Flag at half-mast on the Copley Square Hotel. (Joe Spurr/WBUR)Army National Guardsmen standing at the blockade at Berkeley and Boylston Streets. (Joe Spurr/WBUR)This program aired on April 17, 2013. The audio for this program is not available.Boston Marathon Bombings