it s important to note that the nypd he says there is threat to the public. it is secure around the u.n. national headquarters blocked off on first avenue. the united nations is even allowing pedestrians to come and go from the u.n. headquarters building on 46th street and allowing vehicular traffic on 42nd. that means they believe this situation is contained enough in the area is secure enough to allow that to happen. that is good news. when you look at the united nations headquarters, it picks up seven blocks here on first avenue. it is a massive building and its own territory in its own right. there are other missions from other countries in and around that building on that avenue which is why they have created a secure zone there. in fact, the u.s. united nations mission is located on