An Airbus A320 of the Pakistan International Airlines descends dangerously close to the houses in a densely populated residential area of Karachi, less than a kilometer from the airport where it was trying to land, and hits one of the buildings, tail first. There is an explosion and within a fraction of a second, thick plumes of black smoke rise in the air. All this, captured on a CCTV camera on the roof of one of the houses in the same locality.