The Defense Industry refers to the sector of the economy that focuses on producing goods and services for military and national security purposes. This includes the manufacturing of weapons, vehicles, and technology used by armed forces. Companies in this industry often work closely with governments to develop advanced systems that enhance a nation's defense capabilities. In addition to weapons, the Defense Industry also encompasses areas like cybersecurity and intelligence. Organizations may create software to protect sensitive information or develop strategies to counteract threats. Key players in this field include major corporations like Lockheed Martin and Northrop Grumman, which contribute significantly to a country's military readiness.