rattled, and security personnel are doing what they can momentarily to clear this part of the building. i have no idea whether it was part of the construction work, whether it was an accident or what is going on. we re going to try to find out those details and get them to you as soon as possible. but interestingly enough, one intelligence official here in the building said, when he saw what appeared to be the coordinated attack on the world trade center, his advice was to stay away from the outside of the building today just in case. now, again, nobody has any indications of exactly what happened, but it appears that there has been some kind of it felt like a small blast of some kind. again, the windows shook the building shook, the windows rattled. and people if i m looking out the window now, and the
the advanced warning. if you look at every major terrorist incident against the united states, whether you re talking pan am 103, the world trade center, the u.s.s. cole bombing, the bombing in saudi arabia, rarely do you get notice. sorry to interrupt you. we have new information from the pentagon. reporter: katie, i don t want to alarm anybody right now, apparently it felt just a few moments ago like there was an explosion of some kind here at the pentagon. we re on the e-ring of the pentagon, we have a window that faces out toward the potomac, toward the kennedy center. we haven t been able to see or hear anything after the initial blast. i just stepped out in the hallway. security guards were herding people out of the building and i saw just a moment ago as i looked outside, a number of construction workers who have been working here have taken flight. they are running as far away from the building as they can right now. i hear no sirens going off in the building, i see no sm