Faith Abubey reports from the storm zone in Florida, where Tropical Storm Debby has made landfall, triggering a flood emergency and killing at least four people, and Ginger Zee tracks the storm's path from Georgia, where it's expected to bring potentially historic flooding; Rebecca Jarvis has details on the U.S. stock market facing one its worst days in nearly two years after a worldwide selloff and a weaker-than-expected jobs report renewed fears of a recession; Tom Soufi-Burridge has the latest on the American troops that were injured after two missiles targeted the Al Asad Airbase in Iraq, the U.S. DOD has confirmed; and more on tonight's broadcast.