Portuguese to English Other Military / Defense

This term occurs in a text about the defense plans for the base of a valuable goods transport company against attacks by armed gangs in Brazil and the practise of these activities (exercícios na forma de simulados práticos). The sentence is as follows: "utilizando-se munição alternativa de cera e bombas para festas juninas." I understand that Festa junina in Brazil is the same as or similat to the São João festival in Portugal and also that, according to Wikipedia(!): "The "quadrilha" features couple formations around a mock wedding whose bride and groom are the central attraction of the dancing." My text delas with "quadrilhas", meaning armed gangs of criminals. Would I be right in assuming that this is the link and that the festa junina therefore refers to creating a mock attack scenario in which the employees at the base would put their defense plan into action? Has anyone ever come across this term used in this way? Thanks for any help.