Gwendolyn “Wendy” Bounds, an award-winning broadcast reporter, was an eyewitness of 9/11. In his book, September Twelfth: An American Comeback Story, roving reporter Rotbart describes Wendy Bounds as telegenically attractive, “with big chocolate-brown eyes, a sparkly broad smile, and shoulder-length buttery blond hair blended with honey highlights.” Today, the long-time desk jockey is ripped, with muscular arms, strong and toned legs, and broad, well-developed shoulders. Wendy has transformed herself into a competitive Spartan racer, running through mud pits, crawling under barbed wire, swinging across monkey bars, and hoisting sandbags as she navigates obstacle courses. “It is never too late to achieve your full potential,” Wendy writes in a new book, out tomorrow (June 18). “Age,” she tells the roving reporter and his deputy, Maxwell, “can be a secret weapon.” Age. Learn how to use it.