May 26, 2011 11:16 pm Potomac River Safety Warning Emergency crews are sending out a warning about the dangers of the Potomac River. As Jackie Bensen reports, they are hoping to prevent another Memorial Day tragedy. Local 2:12 2 teens arrested in Greenbelt senior skip day shooting 2:15 Veteran of wars in Iraq, Afghanistan killed in Laurel hit-and-run 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