Fire extinguisher had been developed by DuPont and the US Army in 1954. Both 1211 and 1301 work by inhibiting the chain reaction of the fire, and in the case of Halon 1211, cooling class A fuels as well. Halon is still in use today but is falling out of favor for many uses due to its environmental impact. Europe and Australia have severely restricted its use, since the Montreal Protocol of 1987. Less severe restrictions have been implemented in the United States, the Middle East, and Asia. Internationally there are several accepted classification methods for hand-held fire extinguisher. Each classification is
Honolulu Fire Department fire prevention and other public safety education programs. CRO manages the museum and offers fire safety classes. Class topics range from general fire safety prevention and preparedness tips, use of a fire extinguisher, understanding the common causes of fire, how to prevent fires, and what to do in case of a fire. CRO also participates in numerous fire safety education community events. A publication the HFD produces annually is the Fire Fighter’s Safety Guide (FFSG). The FFSG is now going on about 30 years since its first publication and about 100,000 copies are now distributed island wide to all schools.