I didn't "use" anyone, the "Feinstein face" was there in the original AP photo, just as I said it was.
Here, go see it yourself on CNN's website:
http://www.cnn.com/interactive/us/0109/terror/frameset.exclude.html
Once it loads, click on the "11" to see the eleventh photo.
If that doesn't load for some reason, go to http://www.cnn.com/SPECIALS/2001/trade.center/day.section.html, then click on "Gallery: World Trade Center destruction", then from there click on "11" to see the eleventh photograph.
All I did was blow it up in size, draw a circle around the face, then find a semi-profile face of Feinstein at http://www.zpub.com/un/un-df.html to compare it against (which I mirror-imaged so it would be facing the same direction as the "face" in the smoke for easier comparison).