Starts now. More than 30 Million People under threat of Severe Weather tonight from texas to maine. Good evening. Im norah odonnell, and thank you for being with us. Thunderstorms, damaging winds, very large hail, and even tornadoes all possible, as tens of millions of americans hit the roads and airports. More than 12,000 flights have been delayed, and more than 700 canceled over the last two days. The faa says that today is the busiest day for the airlines this holiday weekend, with more than 53,500 flights scheduled at the nations airports. Cbss Omar Villafranca will start us off tonight with the Severe Weather that turned deadly across the border in mexico. Reporter shocking video shows the moment a Campaign Rally in mexico turned into a catastrophe. 10,000 people were attending an event featuring longshot president ial candidate jorge maynaz when wind gusts up to 50 miles an hour blew down the stage he was on. Metal beams, lights, and a video screen crashed down onto the crowd bel