June 26, 2016 6:55 pm First Responders Simulate Smoke Emergency at Metro Station The Greensboro Metro station was closed to riders Sunday morning as first responders practiced what to do if smoke fills a tunnel. News4’s Derrick Ward reports. Local 3:28 Social media and teens' mental health: A psychiatrist weighs in 1:41 DC-area police ramp up traffic enforcement in pedestrian safety campaign 3:05 ‘We need real liberation': George Washington University pro-Palestinian protest enters fifth day 2:17 GW asks to students to move pro-Palestinian demonstration 3:01 “It's 100% different”: Community reflects on emergency curfew at National Harbor