 A lot of fireworks displays filled the sky around the region last night for the holiday. But WTOP's Lynn Bowie reports illegal fireworks caused damage and destruction in one county in our area. Fireworks are dangerous. They explode. They catch on fire. Fireworks likely caused two house fires in Montgomery County. Pete Peeringer with Fire and Rescue says in Aspen Hill, a person is without a home after fireworks sparked a fire causing more than $500,000 in damage.