Lockheed Martin’s Prepar3D: The Evolution of a World-Class Flight Simulator. Lockheed Martin’s Prepar3D (pronounced prepared) is one of the most advanced flight simulators available today, blending military-grade realism with educational and professional versatility. Originating from the legacy of Microsoft Flight Simulator X (FSX), Prepar3D has grown into a sophisticated platform used by professional aviators, military… Read more