The following are examples of types of air traffic controllers:

Tower controllers direct the movement of vehicles on runways and taxiways. They check flight plans, give pilots clearance for takeoff or landing, and direct the movement of aircraft and other traffic on the runways and other parts of the airport. Most work from control towers, as they generally must be able to see the traffic they control.

Approach and departure controllers ensure that aircraft traveling within an airport's airspace maintain minimum separation for safety. They give clearances to enter controlled airspace and hand off control of aircraft to en route controllers. They use radar equipment to monitor flight paths and work in buildings known as Terminal Radar Approach Control Centers (TRACON). They also provide information to pilots, such as weather conditions and other critical notices.

O lema da tropa

O destemido tenente, no seu primeiro dia como comandante de uma fração de tropa, vendo que alguns de seus combatentes apresentavam medo e angústia diante da barbárie da guerra, gritou, com firmeza, para inspirar seus homens a enfrentarem o grupamento inimigo que se aproximava:

— Ou mato ou morro!

Ditas essas palavras, metade de seus homens fugiu para o mato e outra metade fugiu para o morro.