Headquartered in Bethesda, MD, Lockheed Martin is a global security company that employs about 146,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The corporation reported 2008 sales of $42.7 billion.Lockheed Martin is led by Robert J. Stevens, Chairman, President and Chief Executive Officer.CUSTOMER BASE: As a global security and information technology company, the majority of Lockheed Martin's business is with the U.S. Department of Defense and the U.S. federal government agencies. In fact, Lockheed Martin is the largest provider of IT services, systems integration, and training to the U.S. Government. The remaining portion of Lockheed Martin's business is comprised of international government and some commercial sales of our products, services and platforms.Lockheed Martin's operating units are organized into broad business areas.* Aeronautics, with approximately $11.5 billion in 2008 sales, includes tactical aircraft, airlift, and aeronautical research and development lines of business.* Electronic Systems, with approximately $11.6 billion in 2008 sales, includes missiles and fire control, naval systems, platform integration, simulation and training and energy programs lines of business.* Information Systems & Global Services (IS&GS), with approximately $11.6 billion in 2008 sales, includes C4I, federal services, government and commercial IT solutions.* Space Systems, with approximately $8 billion in 2008 sales, includes space launch, commercial satellites, government satellites, and strategic missiles lines of business.