May 19, 2016 6:30 am Police Investigate Tweet Threatening Md. High School There will be an increased police presence at a Burtonsville, Maryland, high school Thursday after someone threatened to “shoot up” the school online. Local 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor 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