Air traffic is controlled by a specialized network of professionals known as Air Traffic Controllers (ATCs), who are typically employees of a national government body or a privatized agency. In the United States, air traffic is managed by the Federal Aviation Administration (FAA), while in the UK, it is handled by NATS (National Air Traffic Services). These controllers are responsible for directing aircraft on the ground and through a controlled section of airspace, ensuring that planes maintain a safe distance from one another. The system is divided into three main areas: Tower Control, which handles takeoffs, landings, and ground movements at the airport; Terminal Radar Approach Control (TRACON), which manages aircraft within a 30-to-50-mile radius of the airport; and Air Route Traffic Control Centers (ARTCC), which monitor planes during the "en route" phase of flight at high altitudes. They use sophisticated radar, satellite navigation (ADS-B), and radio communication to coordinate hundreds of thousands of flights daily, prioritizing safety, order, and efficiency in the global skies.