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
Fire breathing many inherent risks to the health and safety of the practitioners. Fire breathing has a wider range of risks due to the required technique to create the effect. Having an actively spotting trained safety assistant with an appropriate fire blanket and fire extinguisher is an appropriate best practice when fire breathing and is a mandatory clause in most insurance policies for professional fire breathers. To increase safety, fire breathers must avoid highly combustible fuels such as alcohol, spirit-based fuels, and most petrochemicals, instead using safer combustibles with a higher flash point (>50 °C). Due to its relatively safe (≈90 °C)