The Atlas Cheetah is a fighter aircraft of the South African Air Force. It is a major upgrade of the Dassault Mirage III. Three different variants were created, the dual-seat Cheetah D, and the single-seat Cheetah E and Cheetah C. The Cheetah E was retired in 1992, and the SAAF currently has a mixture of 28 Cheetah Cs and Cheetah Ds in operational service. From 2007, the Cheetah fleet will be replaced by 28 Saab JAS-39 Gripens (19C/9D).