Terrifying History on Instagram: "On September 11, 2001, New York City residents bore witness to one of the most horrific scenes in modern history as hundreds of people trapped in the World Trade Center towers made the impossible choice to leap from the burning skyscrapers. In countless interviews over the years, survivors and eyewitnesses have described the unimaginable horror of watching people fall through the smoke-filled sky, their silhouettes forever etched in memory. Office workers, firef