officers here with the response unit, moving poppy and myself, all of our cnn colleagues out on the street here. obviously serious enough to evacuate the building, take us off the air from new york. listen, as it happens, poppy and i were reporting on the air about the series of other explosive devices received at the residences of clinton and obama, at the white house now, and with the new suspicions that those devices were linked. of course, the question now, whether this one is linked to those. certainly the timing is, at the very least, suspicious here. again, just as we're standing here on the street, the police being very cautious, as you would expect them to be. they want us to get as far away from the building as possible because if it is indeed an explosive device sent here, they want to reduce the risk to all of us here. they don't know if there's something else that might be connected to it. we are seeing a robust response