All Eyes has a set of never-before-seen photos from September 11, 2001 that ABC News obtained through a Freedom of Information Act request. The photos are taken by NYPD Detective Greg Semendinger from the New York City Aviation Unit and show the precise moments directly before and after the collapse of the towers.

The views shown are unique because they offer a glimpse of the chaos from the air rather than from the ground. Click the images below to cycle through.