For several years Portland Caco took responsibility for the Disgruntled Postal Workers - a group of surly, heavily armed people in postal uniforms who, when they felt like it, delivered newspapers and other forms of "mail" at the Burning Man annual festival, until the Burning Man organizers outlawed their guns (which, reportedly, made some of them even more disgruntled). A kinder - gentler BRCPO (Black Rock City Post Office) which sends US postal mail from the Burning Man festival (with their own BRCPO postmark by special arrangement from the US Postmaster), is still run by PDX Cacophony associates.