The Lockheed/Boeing C-5M is a comprehensive upgrade to the C-5A and C-5B fleet. This model is fictional only in the model used, because this model involves a Canadian Air Force C-5M ... not real. Otherwise, all of the flight dynamics are based on real world data. If you like flying long-distance, high altitude, over-night flights, you'll like this aircraft. Includes realistic flight checklist and reference, smoke, and authentic sound, plus fore and aft cargo opening.