street. hearts raced and traders looked on in horror as the dow took a running jump off a cliff, dropping nearly 1,000 points in a matter of minutes. was it the financial crisis in grooes or a trading error? >> the times square bombing suspect seen on video buying fireworks in pennsylvania. susan candiotti following all of the latest developments on this terror case for us. 15 miles off the coast of louisiana, a four-story 100-ton concrete containment dome is on its way to the ocean floor this morning. they are trying to position it over a ruptured well that's been spewing thousands of gallons of fresh crude oil into the open sea every day. in the next 72 hours we should know whether or not this underwater experiment is successful. officials are hoping the dome