Defense systems are technologies and strategies designed to protect a nation or organization from threats, such as military attacks or cyber intrusions. These systems can include a variety of components, such as missile defense systems, radar technology, and cybersecurity measures, all aimed at detecting and neutralizing potential dangers before they can cause harm. In addition to physical barriers, defense systems often involve intelligence gathering and analysis to anticipate threats. This can include the use of satellites for surveillance, drones for reconnaissance, and military personnel trained to respond to emergencies. Together, these elements create a comprehensive approach to national and organizational security.