Air Force Base Waterkloof is an airbase of the South African Air Force. It is situated on the outskirts of Pretoria, and is the SAAF's busiest airbase. The base's name, Waterkloof, is Afrikaans. It means Water Ravine in English. Despite the name, this base is not located in Waterkloof, Pretoria, but lies to the south of Pretoria, to the northeast of Centurion, Gauteng and from AFB Swartkop, at an elevation of 1506 metres (4940 ft). The base motto is Acquirit Qui Tuetur (He Obtains Who Defends).