 The president's campaign chairwoman said the president was clearly making a joke, which he followed with, all kidding aside. Let's go back now to the festivities on the National Mall, where we find WTOP's Scott Gallman. Hey, Sarah. So I am here along National Mall. We're inching closer to the start of the fireworks. They're going to start at 9.09.30, a specific time, so it can be synchronized on television and last 17 and a half minutes. Tens of thousands of people braved the rain. They're