NBC Affiliates | ShopTalk San Diego Fireworks Fail Rattles KNSD Newsroom By Andrew Gauthier on Jul. 5, 2012 - 11:34 AM The massive Fourth of July fireworks fail in San Diego, in which a 15-minute show’s worth of pyrotechnics went off in 20 seconds, was so big it rattled the newsroom of local NBC station KNSD. KNSD is located just across San ...