BOSTON, MA - APRIL 20:  People take photos of a sign reading "We are Boston We Are Strong" on Boylston Street, where the Boston Marathon finishes, on April 20, 2014 in Boston, Massachusetts. This year's marathon will be held tomorrow, Monday, April 21; last year two pressure cooker bombs were detonated near the finish line, killing three people and injuring more than 260 others.  (Photo by Andrew Burton/Getty Images)