Two construction workers are unaccounted for after a massive, fast-moving fire broke out at a North Carolina construction site Thursday morning, the city's fire chief said. Fifteen workers, including a crane operator, were rescued by the more than 90 firefighters called to the five-alarm blaze in the South Park neighborhood of Charlotte just after 9 a.m., Fire Chief Reginald Johnson said at a news conference. The crane operator was taken to a hospital with injuries that were not considered life-