Within the framework of Operation Charly, the Argentine military also implemented, with the help of the Reagan Administration, a series of arms interdiction programs in Central America to disrupt the supply of weapons to the insurgencies in the region.
In July 1980, the Grupo de Tareas Exterior (GTE, External Operations Group) headed by Guillermo Suárez Mason, of the 601 Intelligence Battalion, took part in the Cocaine Coup of Luis García Meza in Bolivia, with the assistance of the Italian terrorist Stefano Delle Chiaie and Nazi war criminal Klaus Barbie.