ROUGH CUT (NO REPORTER NARRATION)<br/> <br />an a week after two explosions at the Boston Marathon claimed three lives and injured 176, visitors to a makeshift memorial near the finish line are still trying to comprehend the worst such attack on U.S. soil since September 11, 2001.<br/> <br />"I'm from Massachusetts, and I have strong ties to this area, and I was just shocked," said Scott Worthington.<br/> <br />"It was like, you couldn't turn away from the media coverage, you just really couldn't. You couldn't believe that something like this would happen to the city of Boston."<br/> <br />The bombs in Boston killed an 8-year-old boy, Martin Richard; a 29-year-old woman, Krystle Campbell; and a Boston University graduate student and Chinese citizen, Lu Lingzi.<br/> <br />"We feel very, very bad," said memorial visitor Ruth Pan.<br/> <br />"I think all Chinese feel very bad about that because she comes to study, comes to America to study. I think their family will be very very sad, so...I don't know what to say. I w
