 In Leesburg, Neil Orgenstein, WTOP News. Fireworks are clearly a big part of every Fourth of July. While D.C. is known for its spectacular fireworks display, many fireworks are actually illegal in the nation's capital. WTOP's Cheyenne Corrine took a trip to the D.C. Fire and EMS Training Academy ahead of Independence Day next week to learn more about which ones are and aren't okay to use.