He was charged with allegedly carrying an unlicensed firearm and making threats to a private citizen in another vehicle.
A track problem outside Metro's Silver Spring station caused delays.
Serious crash closed roadway. Vehicle and tractor trailer involved.
One car was on fire, but police captain said occupants got out.
A short segment of eastbound Aspen Hill Road is closed.
The quest to determine whether a woman in a hazmat suit passed through Dulles.
Passengers flew on the plane the next day, before Amber Vinson was diagnosed with the illness.