ALISON KOSIK, CNN BUSINESS CORRESPONDENT: That immediately sent Wall Street off into a tailspin for a dramatic few minutes. You saw the Dow drop over 100 points, 140 points pretty much, within seconds dropping that much. I don't know if we can pull up the chart and show just how steep that drop was and so quickly. And then it turned around and recovered within minutes when the A.P. realized it had been hacked and said that tweet was not correct. It really shows, Brooke, how the headlines can really moved the market, especially when there is a shocking headline from a reputable news organization, just how much it can move the market. It also shows this high-frequency trading that is so prevalent now, this computerized trading, where trades can happen in nanoseconds and market activity can change in an instant. Brooke?</s>BROOK BALDWIN, CNN ANCHOR: At least we have the bounce back, way above that 14,000 mark, despite this rollercoaster, quick rollercoaster of a day on Wall Street. Alison Kosik, thank you.</s>CHRIS CUOMO, CO-ANCHOR, "CNN NEWSROOM": It also shows the general anxiety atmosphere we're in now. We' won't repeat what the tweet was because it was fake and it was offensive, but we're all on edge, and it's just one more reason why the investigation surrounding what happened here is so important. The more we get answers, the more people calm down and understand that the situation is under control.</s>BALDWIN: There is surveillance video and witnesses and a nation wanting justice here. So does -- how does a lawyer defend Dzhokhar Tsarnaev? Coming up next, we're talking to two attorneys who faced a similar challenge. They each defended a terrorist suspect.
False Tweet Saying President Was Hurt in Bombing Rattles Market