Oklahoma City Memorial Marathon officials will be smart, but they do not want to give into fear - Article Photos 39/44

Emergency responders aid a woman on a stretcher who was injured in a bomb blast near the finish line of the Boston Marathon Monday, April 15, 2013 in Boston. Two bombs exploded in the packed streets near the finish line of the marathon on Monday, killing at least two people and injuring more than 80, authorities said. (AP Photo/Jeremy Pavia) ORG XMIT: NY119