The spread of such transnational gangs as Mara Salvatrucha presents an ongoing threat to the security and stability of Central America. These gangs have proven remarkably adaptive, moving up the ladder of criminal enterprises since their inception in the late 1980s in Southern California. The model of the "three generations" of gangs has provided a clear picture of their past and given a glimpse into their future operations. This model combined with the increasing influence of the Mexican Cartels, the globalization of the Maras, and the new sophistication of Maras modus operandi demonstrate an even more dangerous threat to regional security: the possibility of increasingly sophisticated and cohesive Maras becoming more closely allied with the Mexican Cartels, or perhaps developing their own Cartel-like system in Central America.