Military police also consists of SWAT units, like, BOPE, Rio de Janeiro's "Batalhão de Operações Policiais Especiais" (Battalion of Special Police Operations), and COE, "Comandos e Operações Especiais" (Commands and Special Operations) from São Paulo. Also there is an anti-riot unit called "Batalhão de Choque" (Chock Battalion) and São Paulo's specialized police, ROTA, "Rondas Ostensivas Tobias de Aguiar" (Tobias de Aguiar Ostensive Rounds), and a motorcycles battalion, ROCAM, "A Ronda Ostensiva Com Apoio de Motocicletas" (Ostensitive Ronda Supported by Motorcycles). Police in São Paulo also use "Helicopteros Aguia" (Eagle helicopters). As a general rule every state's Military Police is called "Policia Militar", except Rio Grande do Sul's police, which are called as the "Brigada Militar" (Military Brigade). The Military Police have a drug abuse resistance education program, PROERD, or "Programa Educacional de Resistência às Drogas e à Violência" (Educational Program on Drug Resistance and Violence) that teaches youth about not using drugs and alcohol. Also, some police cars are designed to patrol schools, and those cars are painted to say ""Patrulha Escolar"" (School Patrol). There are also the "Policia Ambiental" (Environmental Police), or "Policia Florestal" (Forest Police), the canine units, and water police formations like maritime, fluvial and coastal police units under either the military police or the civil police. There is also the "Polícia Penal" that is translated as Prison Police. They work as the Prison Guards and Agents, and are organized in a similar manner. There are 3 of those, being the Civil, Militar, and Federal Polices counterparts. Also there is the "Guarda Portuária" or Harbor Guards that works in naval ports and airports. They are the naval and aerial federal asset that remembers Federal Highway and Federal Railway Polices.