with our thanks for being with us. our hearts are with the families of those we lost. and we leave you with that sight of new york city. a reminder, perhaps, of the possibility of a country attack on america. a special edition of nbc nightly news. terrorist declare war on the united states, hijacking jetliners crashing them into new york s word trade tower. another airliner in the pentagon, threatening the seat of national power. thousands likely dead, downtown new york in chaos. america wondering, what s next? midtown manhattan, tonight americas at war with terrorists