Un momento delle prove del Tribute in lights dell'11 settembre, in occasione del decimo anniversario degli attentati alle Torri gemelle

A test of the Tribute in Light rises above lower Manhattan, Wednesday, Sept. 7, 2011 in New York. The memorial, sponsored by the Municipal Art Society, will light the sky on the evening of Sept. 11, 2011 in honor of those who died ten years before in the terror attacks on the United States. (Lapresse/AP Photo/Seth Wenig)