There's a misconception that jet fuel is more flammable than gasoline and that's just not true. In spite of what you see in Hollywood movies, Jet A has a much higher flash point and does not give off vapors like gasoline does so it actually takes a fair amount of effort to get it to ignite.

Jet fuel is more like kerosene or diesel fuel - it is highly combustible in the right situation and burns longer and hotter but it is much safer to handle in liquid form than other fuels because of it's higher flash point (the temp at which fuel vaporizes and ignites +100F vs. -45F for gasoline).

If you throw a lit match into a barrel of jet fuel it will just extinguish.