April 15, 2013 11:16 pm D.C. Takes Precautions Following Boston Blasts D.C. Mayor Vincent Gray and D.C. Police Chief Cathy Lanier said a precautionary security was in place soon after the fatal explosions near the Boston Marathon. News4’s Pat Collins reports. Local 1:48 DC police search for gunman who shot and killed 3-year-old child 1:11 What to do if you see a black bear 1:56 3-year-old child shot in Southeast DC 26:00 DC student grazed by gunfire while in class: The News4 Rundown 2:07 Program gives returning citizens second chance — and opportunity to pay it back