US Air Force/Master Sgt Michael Jackson The US military is the world's largest consumer of oil, and the Air Force is the biggest consumer within the Defense Department. That dependence on jet fuel and the outdated ways the service moves around it and plans for its use are a risk. But there are changes the Air Force can make to its logistics and its technology to keep a strategic advantage, according to Roberto Guerrero, deputy assistant secretary of the US Air Force for operational energy. Visit Business Insider's homepage for more stories. "As a service that provides global reach, global vigilance, and global power, are we thinking globally?" — Gen.