We want to let you know, brian williams and nicolle wallace will continue our special live coverage after the break. good morning from ground zero in lower manhattan on this september 11th. a clear, stunningly beautiful start to a somber day. so much like that unforgettable morning 20 years ago today that left a hole in the earth here and changed our world forever. brian williams here with you along with nicolle wallace in the shadow of the freedom tower.