Headquartered in Maryland, Lockheed Martin is a global security and aerospace company with around 120,000 employees around the world.  The workers span the following fields: research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Most of its business is with the U.S. Department of Defense and the U.S. federal government agencies, since its focus is on international security, aerospace, and IT.  Indeed, it is the largest provider of IT services, systems integration, and training to the U.S. Government.