Líder [SEP] inception
History.
Líder's origins lie in the 1893 establishment of Distribución y Servicio (D y S) as an important distribution company. That company opened the Tres Montes general store in 1921. In 1957, the company opened Latin America's first supermarket in Santiago, Chile followed by the opening Ekono a discount supermarket in 1984. In 1995, the Líder hypermarket was born and was followed by the Líder Vecino neighborhood markets and Líder Express concepts in 2000 and 2003 respectively. The company added a membership warehouse store in 2007.
components of the 57th Operations Group, placing them all under a single organization. Has trained combat aircrews in adversary threat tactics since its inception.
History Lineage.
- Established as 57th Adversary Tactics Group on 31 Aug 2005
History Assignments.
- 57th Wing, 15 Sep 2005–Present
History Components.
- 64th Aggressor Squadron: 15 Sep 2005–Present
- 65th Aggressor Squadron: 15 Sep 2005–26 September 2014
- 527th Space Aggressor Squadron: 14 Apr 2006–Present
- 547th Intelligence Squadron, 15 Sep 2005–2014
- 57th Adversary Tactics