Energy independence is an emphasis item in the DoD now...the air force is looking at synthetic jet fuels made from coal for all it's aircraft. It's already been tested on B-52s and C-17s. It is quite a bit more expensive but energy independence equals increased national security. If we only rely on other countries for our energy then we are at their mercy. If you have ever been to the middle east and seen our oil dollars at work there it would make you sick.