 Well, D.C. is getting ready for the huge crowds expected Thursday along the National Mall for the 4th. District leaders say they've spent months planning the big festivities, including getting ready for all types of weather, any safety issues that might come up. More on all the preparations now from WTOP's Scott Gelman. The 17-and-a-half-minute firework display doesn't start until after 9 o'clock, but Michael Litterst with the National Park Service is expecting thousands of people to arrive here in downtown D.C. well before then.