The last commercial flight above the continental United States lands.1

Visible from space, a smoke plume rises from the Manhattan area after two planes crashed into the towers of the World Trade Center. This photo was taken of metropolitan New York City (and other parts of New York as well as New Jersey) the morning of September 11, 2001. “Our prayers and thoughts go out to all the people there, and everywhere else,” said Station Commander Frank Culbertson of Expedition 3, after the terrorists’ attacks. Image credit: NASA2

1 “American Airspace is Cleared” National September 11 Memorial and Museum n.d. Web. March 17, 2011 http://timeline.national911memorial.org/#/Explore/2/Entry/57/81
2 “9/11/01 WTC Smoke Visible from Space” NASA n.d. Web. April 27, 2011 http://www.nasa.gov/mission_pages/station/main/iss003e5387_feature.html
Courtesy of the National 9/11 Memorial and Museum