While synthetic fuel has the capacity to reduce our dependence on foreign oil, it could also double CO2 emissions produced by military flight. At the time of this writing, synfuel is made via Fischer-Tropsch process from either coal or natural gas to produce a somewhat cleaner burning but extremely greenhouse-gas intensive product.

The Air Force may be underscoring a recently hyped green image, but it seems that economic considerations are largely at play here.

Politics and market forces are stimulating alternative fuel research it seems.
Why do we need the Convenient Lie to do "force" it.
They've done a much more effective job of terrorizing our children then any visions of "beheading mullahs" ever have.