It was like a vision, he says, when a wall of his family’s third-floor apartment split wide-open, and before him in the late-afternoon light flashed their Port-au-Prince neighborhood, Canapé Vert. Inside and outside were merging, and then everything was caving in. In the violent rumbling of a 7.0 magnitude earthquake that began at 4:53 p.m. on Jan. 12, 2010, and ravaged the Haitian capital, he was descending. Three stories became one pile of concrete, rebar, walls and possessions. The light disappeared.