The man above remained rigid and yet his mystery was mobile. He stood beyond the railing of the observation deck of the south tower—at any moment he might just take off. Below him, a single pigeon swooped down from the top floor of the Federal Office Building, as if anticipating the fall. The movement caught the eyes of some watchers and they followed the gray flap against the small of the standing man. The bird shot from one eave to another, and it was then the watchers noticed that they had been joined by others at the windows of offices, where blinds were being lifted and a few glass panes labored upwards. In the windows of nearby skyscrapers, figures came to look out—men in shirtsleeves and women in bright blouses, wavering in the glass like fun-house apparitions.