Chemical odor causes hour-long evacuation at Washington , D.C. 's Union Station . Cause of odor was overheated battery system , official says . One person taken to hospital for evaluation after complaining of dizziness . Delays from the temporary suspension would probably affect train service through the afternoon , Magliari said . Score: 6
Chemical odor causes hour-long evacuation at Washington , D.C. 's Union Station . Cause of odor was overheated battery system , official says . One person taken to hospital for evaluation after complaining of dizziness . Score: 6