Anti-aircraft systems are military technologies designed to detect, track, and destroy enemy aircraft. These systems can include a variety of weapons, such as missiles and guns, and are often deployed in strategic locations to protect ground forces and critical infrastructure from aerial attacks. Modern anti-aircraft systems may also incorporate radar and advanced sensors to identify threats at long distances. Some systems are mobile, allowing them to be repositioned quickly, while others are stationary and provide a fixed defense. Examples of these systems include Patriot missiles and surface-to-air missiles (SAMs).