 D.C. is getting ready for the huge crowds expected the day after tomorrow along the National Mall for the 4th of July. District leaders say they've spent months planning the big festivities, including getting ready for all types of weather and any safety issues that might pop up. More on 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.