Jet-A fuel is based upon kerosene. Jet-B is based on naphtha-kerosene. Both have many additives to change there properties Kerosene.
Aviation fuel, similar to kerosene. Only smaller aircraft with piston engines use a fuel similar to gasoline, called AVGas (Aviation gasoline) Military Jets use fuels specially designed for Jet...
It burns safely without a big danger of explosions.
To get to a certain location on Earth faster
Well the first airline to use jets was.... http://www.answerblip.com/what-was-the-first-commercial-airline-to-use-jet-airplanes