A person falls from the north tower of World Trade Center, Sept. 11, 2001. (AP Photo/Richard Drew)

Twenty years ago a person leaped from a skyscraper in the hope of flight, as fire engulfed everything above and below.

As an army transport plane ascended into the skies above Kabul, a spec fell off the fuselage. The spec was a young Afghan footballer clinging to freedom only to find death in return.

These moments of humans suspended in air, bookend twenty years of horror, death, destruction and the…