Crime can pay this weekend in Montgomery County. Residents in possession of fireworks, which are illegal in Montgomery County, can trade in their contraband for free passes to Six Flags amusement parks.

Fire department spokesman Pete Piringer said the county recovers thousands of fireworks every year through its “amnesty program,” in which residents can turn in fireworks without fear of being arrested or fined at firehouses in Glenmont and Gaithersburg on Saturday, Sunday and July 7.