NEW YORK - The parent company of KFC and Taco Bell — still smarting from last year's E. coli scare — has been forced back into damage-control mode after television cameras caught rats scampering around a restaurant floor. A TV crew discovered the rat infestation and began filming through a window of the building early Friday. About a dozen rats were filmed racing around the restaurant's floors, playing with each other and sniffing for food as they dashed around tables and children's high chairs.