Air traffic controllers are responsible for managing aircraft through all phases of flight by using radar and radio communication equipment to instruct pilots and ensure timely arrivals and departures. They work in control towers at airports and area control centers, using radar to locate aircraft positions and guide them along the most efficient routes. Candidates complete a two to four year degree program through an FAA-approved AT-CTI school, then take the AT-SAT exam and undergo extensive on-the-job training before advancing to higher positions. Controllers enjoy high starting salaries that increase with training, along with federal benefits and the ability to retire in their fifties with a full pension.