Surveillance aircraft are specialized planes designed to monitor and gather information from the air. They are equipped with advanced sensors, cameras, and radar systems that allow them to capture images and data over large areas. These aircraft are used by military forces, law enforcement, and various government agencies for tasks such as reconnaissance, border patrol, and disaster response. These aircraft can operate at various altitudes and can be manned or unmanned, with the latter often referred to as drones. Surveillance aircraft play a crucial role in national security and intelligence operations, providing real-time information that aids in decision-making and situational awareness.