There was another great settling, another one of those horizontal mushroom clouds of dust; and when it cleared, the two people were gone. They had made their move. Sokolov scanned up and down the street, forcing himself to remain calm and do a proper job of it. He saw them running hand in hand away from the building, headed for an intersection about a block away where a vast crowd of spectators had gathered: cars that had simply come to a stop, and pedestrians crouching behind them to look back at the spectacle of the burning and collapsing building.