A massive commercial fire that started Tuesday evening destroyed the $65 million Canton apartment complex being built in Oklahoma City’s Classen Curve area. Shortly after 6:30 p.m. Tuesday, emergency crews responded to reports of a fire in the 1100 block of NW 63, where firefighters saw smoke emanating from the rooftop of The Canton . “It wasn’t really big at first,” said Krystal Hayes, a cashier at the neighboring Torchy’s Tacos restaurant. “It was slow, but then it was a