 A lot of fireworks displays filled the sky around our region last night, but WTOP's Lynn Bowie reports illegal fireworks cause damage and destruction in one county in our region. 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.