Ageance Nsnt News Today

Security as news unfolded out of the washington navy yard. lets get to kelly on the north yard for us. what can you tell us about that? >> we have seen a heightened sense of security here. what does that mean? a much more visible presence of secret service. one of the things they do is shut down pedestrian traffic in front of the white house and across the way at lafayette park. many people are familiar with that location. anyone who does not possess an official pass permitting them on the compl...