Aerial photo of the World Trade Center block, with contours of the Twin Towers, 23 September 2001
Combined by <a href="https://en.wikipedia.org/wiki/User:Cs32en" class="extiw" title="en:User:Cs32en">Cs32en</a>.
<a href="https://en.wikipedia.org/wiki/National_Oceanic_and_Atmospheric_Administration" class="extiw" title="en:National Oceanic and Atmospheric Administration">NOAA</a> <a rel="nofollow" class="external autonumber" href="http://www.noaanews.noaa.gov/wtc/images/wtc-photo.jpg">[1]</a>,