Impeesa
Explorer
Henry said:Kind of an obvious one: Grease fires should be extinguished by either smothering the flame or with a NON-WATER-based extinguisher.
Less obvious: You can indeed extinguish liquid fires with a firehose if you have what are often referred to as "mad skillz." I've seen someone demonstrate by putting out a large 'pan' full of burning diesel fuel (normally the pans are used for fire extinguisher training). He put the hose on a wide spray and used sort of a circular sweeping motion to push the flames off the surface of the fuel. Pretty impressive.

--Impeesa--