(01 of22)
Open Image ModalBOSTON, MA - APRIL 15: Boston Mayor Marty Walsh participates in a wreath-laying ceremony with members of the victims families commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(02 of22)
Open Image ModalBOSTON, MA - APRIL 15: Boston Mayor Marty Walsh participates in a wreath-laying ceremony with members of the victims families commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(03 of22)
Open Image ModalBOSTON, MA - APRIL 15: The family of Martin Richard including Bill Richard and other members of the victims families stand during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(04 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts Governor Deval Patrick and Cardinal Sean Patrick O'Malley greet members of the victims families during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(05 of22)
Open Image ModalBOSTON, MA - APRIL 15: The family of Martin Richard including Bill Richard, along with Boston mayor Marty Walsh and other members of the victims families stand during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(06 of22)
Open Image ModalBOSTON, MA - APRIL 15: The family of Martin Richard including Bill Richard, along with Boston mayor Marty Walsh, Massachusetts Governor Deval Patrick, and other members of the victims families stand during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(07 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts state and local police and fire department members present flags during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(08 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts state and local police and fire department members present flags during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(09 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts state and local police and fire department members present flags during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(10 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts state and local police and fire department members stand near the site of one of the bombs following a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(11 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(12 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts Governor Deval Patrick walks with members of the victims families during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(13 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department, Boston Fire Department, and Massachusetts State Police practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(14 of22)
Open Image ModalBOSTON, MA - APRIL 15: A runner speaks to Boston police officers at the finish line of the Boston Marathon on the morning of the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(15 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department, Boston Fire Department, and Massachusetts State Police practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(16 of22)
Open Image ModalBOSTON, MA - APRIL 15: A Boston police officer waves traffic across the finish line of the Boston Marathon on the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(17 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department, Boston Fire Department, and Massachusetts State Police practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(18 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department, Boston Fire Department, and Massachusetts State Police practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(19 of22)
Open Image ModalBOSTON, MA - APRIL 15: A runner runs underneath the Boston Marathon finish line photo bridge on the morning of the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)
(20 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts Governor Deval Patrick walks with his wife, Diane, and members of the victims families during a wreath-laying ceremony commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(21 of22)
Open Image ModalBOSTON, MA - APRIL 15: Massachusetts Governor Deval Patrick removes his hat during a wreath-laying ceremony with members of the victims families commemorating the one-year anniversary of the Boston Marathon bombings on Boylston Street near the finish line 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) (credit:Getty Images)
(22 of22)
Open Image ModalBOSTON, MA - APRIL 15: Members of the Boston Police Department, Boston Fire Department, and Massachusetts State Police practice marching prior to a wreath laying ceremony to commemorate the one year anniversary of the 2013 Boston Marathon Bombing, 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 Andrew Burton/Getty Images) (credit:Getty Images)