Jim McCullochJim McCulloch drew upon his skills and experience to make the details in Fracture Gradient highly accurate. His knowledge of the oil industry, finance, large business, military, firearms, and radio communications is from first-hand experience. The historical accuracy of the time period is impeccable. Jim is a former U.S. Army Officer, amateur radio operator, and veteran of the international energy industry. He lives with his wife, Dede, in the rural Coast Range foothills of northwest Oregon. Read More Read Less