National Public Radio: The images of burning fuel trucks that were carrying fuel destined to NATO forces in Afghanistan brings home just how dependent the US military is on fossil fuels, and how fragile that supply line can be. The military has been trying to reduce its reliance on gas for a few years now. As the New York Times reports this morning it has become a strategic necessity. “There are a lot of profound reasons for doing this, but for us at the core it’s practical,” said Ray Mabus, the Navy …