(Jason DeCrow | Associated Press file photo) The Tribute in Light, seen here on Sept. 11, 2017, illuminates the sky above lower Manhattan in New York, seen from across the Hudson River, marking the location where the World Trade Centers stood before the terrorist attacks on September 11, 2001. The Tabernacle Choir at Temple Square will mark the 20th anniversary of those attacks with a 30-minute special of music and reminiscence, to air on TV, cable and streaming outlets.