Lockheed Martin Corporation is a premier global security and aerospace company that operates primarily as a defense contractor for the U.S. government and its international allies. The company's business model is centered on the research, design, development, manufacture, integration, and sustainment of advanced technology systems and products. Lockheed Martin operates through four principal business segments: Aeronautics, which produces advanced military aircraft such as the F-35 Lightning II, F-22 Raptor, and C-130 Hercules; Missiles and Fire Control (MFC), which develops air and missile defense systems like the Patriot Advanced Capability-3 (PAC-3) and THAAD; Rotary and Mission Systems (RMS), which manufactures Sikorsky helicopters (including the Black Hawk) and provides naval combat systems and radar solutions; and Space, which focuses on satellites, space transportation systems, and strategic missile systems. In 2023, the company generated approximately $67.6 billion in total revenue. The U.S. government, particularly the Department of Defense, is its largest customer, typically accounting for over 70% of total net sales, while international customers make up the majority of the remainder. Geographically, while its operations and supply chains are global, its primary manufacturing and research facilities are located in the United States. Lockheed Martin maintains a dominant competitive position in the defense industry, underpinned by its leadership in the F-35 program, extensive technological expertise, and deep-rooted relationships with military and government agencies worldwide.