Fire extinguisher older models also achieved class B and C fire-fighting capability in the past, current models are rated A:K (Amerex, Ansul, Buckeye and Strike First) or K only (Badger/Kidde). Clean agents extinguish fire by displacing oxygen (CO or inert gases), removing heat from the combustion zone (Halotron-1, FE-36, Novec 1230) or inhibiting the chemical chain reaction (Halons). They are referred to as clean agents because they do not leave any residue after discharge which is ideal for protecting sensitive electronics, aircraft, armored vehicles and archival storage, museums, and valuable documents. Halon was completely banned in Europe and Australia except for critical
Fire engine ones which can be found in a fire extinguisher. These features give the airport crash tenders a capability to reach an airplane rapidly, and rapidly extinguish large fires with jet fuel involved. Other fire apparatus include: In some communities a fire apparatus, often a paramedic engine, will be used to carry first responder firefighters, paramedics or EMTs to medical emergencies because of their faster response times due to forward staging in the city. Fire departments may also have lifeguards in places such as Los Angeles County, California. The design and construction of fire engines focuses greatly on the use of