- Distinguish between stored pressure and generated pressure types,
- Distinguish between handheld and cart mounted types,
- Add notes on operation and approximate capabilities,
- Fix classes mess,
- Expand on UK/US 'Class C' types,
- Add notes on the dangerous side effects of inhaling the different types of chemicals used in fire extinguishers,
- Add notes on proper clean-up,
- Explain usage of a fire extinguisher,
- Mention fire extinguisher vandalism if notable
