Lockheed Martin Corporation is a global security and aerospace company principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The Company also provides a broad range of management, engineering, technical, scientific, logistics, system integration and cybersecurity services. It serves both U.S. and international customers with products and services that have defense, civil and commercial applications, with its principal customers being agencies of the U.S. Government. The Company operates in four business segments: Aeronautics, Missiles and Fire Control (MFC), Rotary and Mission Systems (RMS) and Space Systems.