I stumbled across this link in one of the fora I regularly visit. Images of the WTC Disaster 9/11 taken on that day by Allen Murabayashi (erstwhile leader of the PhotoShelter Collection). The one I have linked to here is one of the finest images I've seen, except that it's not straight vertically. Something which can obviously be forgiven in such unprecedented conditions. It is the entrance to a slide show of more images taken on that day.
There are no comments or captions, which is appropriate here. For this immediately recognizable iconic disaster, none are needed.
I also found it interesting that there is no metadata in this image: something I find curious from a major player in the stock photography business. Needless to say, I added the basic stuff in the copy I made.