Defense contractors are private companies that provide products and services to government military agencies. They develop a wide range of items, including weapons, vehicles, and technology systems, to support national defense efforts. These contractors often work on large-scale projects and may collaborate with government entities to meet specific defense needs. Many defense contractors are well-known firms, such as Lockheed Martin, Raytheon, and Northrop Grumman. They play a crucial role in ensuring that military forces have the necessary equipment and support to operate effectively. The relationship between defense contractors and the government is often governed by contracts that outline the terms of service and deliverables.