very laborious process of searching those buildings just in place. they have to go room by room closets boiler rooms, ventilation ducts. they have to check every building now to be sure that just in case someone was spotted with a gun in the first building and then ran off to another building before the phone call was made to the authorities. now they end up in the situation of having to prove a negative that there wasn't a shooting that there wasn't a shooter or maybe just a suspicious person running around. they have to go through this whole process because of that. i do want to get back to our jeff zeleny cnn washington correspondent. jeff i understand a few blocks away from this building where you are before another building has been evacuated, is that right? >> reporter: that's right, upon pi. poppy. a sixth story office building just about a half block from