May 7, 2014 5:50 pm NBC's David Gregory Previews Md. Democratic Debate NBC News’ David Gregory previews Wednesday night’s Maryland Democratic gubernatorial debate. Local 2:25 Community, businesses mark first weekend of emergency curfew at National Harbor 1:27 Police search for suspect who vandalized Rockville synagogue sign 2:03 PNC Parkway Classic marks 40 years of racing in Virginia 5:01 Strawberry Season: Pick fruit at this Virginia festival 0:40 Man stabbed to death near Audi Field in DC