Fire extinguishers require service, maintenance, tests, inspections, annual service, (6) six year teardowns, refills and recharging that should be completed by qualified, factory authorized, certified fire extinguisher companies that are actively licensed in Thousand Oaks, California. May 28, 2022 / 12:28 PM / CBS Los Angeles Firefighters were engaged with a brushfire in Thousands Oaks on Saturday. Using both ground units and a water-dropping helicopter, Ventura County Fire.