 You do know that, right? Hundreds of thousands of people do and are expected to be along the National Mall on Thursday for the annual 4th of July fireworks display. WTOB Scott Gelman tells us law enforcement agencies are prepping for all types of weather and emphasizing safety for everyone who attends. They're urging everyone to drink a lot of water and cool off in Smithsonian museums during the day. If major storms roll in, officers will try to clear the area first and then show people where to go until the weather improves. There's a