Surreal Footage on Instagram: "In the immediate aftermath of the South Tower’s collapse on September 11, 2001, an NYPD helicopter captured harrowing footage from above Ground Zero. The video, recorded by the NYPD Aviation Unit, shows thick clouds of dust and debris engulfing the area, with the skeletal remains of the Twin Towers looming in the haze. The pilot and crew had initially hoped to rescue survivors from the rooftops, but the South Tower was inaccessible due to smoke and structural insta