NYPD 9/11 images
9 Images

PHOTOS: Aerial view of Sept. 11 attacks

Smoke billows from one of the towers. The photos were obtained along with thousands of others by ABC News under the Freedom of Information Act. (Det. Greg Semendinger / NYPD)
One of the towers begins to implode after it was struck by an aircraft. The photos had been partially published but now are publicly available to researchers. (Det. Greg Semendinger / NYPD)
The image was taken from a police helicopter — the only photographers allowed in the airspace near the skyscrapers on Sept. 11, 2001. (Det. Greg Semendinger / NYPD)
Smoke and ash engulf the area around the World Trade Center. (Det. Greg Semendinger / NYPD)
The photos were obtained from the National Institute of Standards and Technology, the federal agency that investigated the collapse of the towers. (Det. Greg Semendinger / NYPD)
The devastation is captured up close. (Det. Greg Semendinger / NYPD)
Lower Manhattan is seen under a shroud of smoke. (Det. Greg Semendinger / NYPD)
The area is consumed by clouds of smoke. (Det. Greg Semendinger / NYPD)
“With these pictures, you move from a specific slice of information to much greater context,” said Jan Ramirez, chief curator at the National September 11 Memorial & Museum. (Det. Greg Semendinger / NYPD)