Two bombs go off in Boston Marathon Finish line

[QUOTE]Boston Marathon bombs kill 2, hurt dozens Two killed in bomb blasts near finish line of Boston Marathon, Boston police say. Area hospitals say at least 69 are injured; Boston Globe reports more than 100 injured. Two explosions happened at about 2:50 p.m., more than two hours after the first of the race's nearly 27,000 runners had crossed the finish line. Boston.com journalist reports "blood everywhere," people missing limbs. Race called off; Red Cross and Google set up websites to help people find loved ones in the area Check back here for updates; full story here; also, see CNN affiliates WBZ; WCVB; WHDH [Update, 5:51 p.m. ET] President Barack Obama is expected to deliver a statement at about 6:10 p.m. ET from the White House. [/QUOTE] Why Runners? Why them?