On 1 November 2023, President Luiz Inácio Lula da Silva announced the activation of the Law of Order Guarantee (GLO), which authorizes the deployment of military personnel to secure Brazilian ports of entry and borders. Effective 6 November and continuing through May 2024, approximately 3,700 military personnel will patrol the ports of Rio de Janeiro, Santos, and Itaguaí. Military personnel will also supplement security at Rio de Janeiro/Galeão International Airport (SBGL/GIG) and São Paulo-Guarulhos International Airport (SBGR/GRU). Moreover, the military will reinforce policing along the border areas with neighboring countries in the Brazilian states of Paraná, Mato Grosso do Sul and Mato Grosso. The implementation of enhanced security measures follows the burning of 35 public buses, as well as 10 tourism and charter buses, in Rio de Janeiro’s West Zone on 23 October by suspected militia members in retaliation for the death of a local militia leader after a confrontation with police officers.