The defense industry refers to the sector of the economy that is involved in the production, development, and maintenance of military equipment, technologies, and services. This includes companies and organizations that manufacture weapons, vehicles, and other military hardware, as well as those that provide support services such as logistics, training, and research and development related to national defense. The defense industry plays a crucial role in a nation’s security and military capabilities, often working closely with government entities and military organizations. It encompasses a wide range of activities, including the design and innovation of defense technologies and the procurement of defense-related contracts by government agencies.