I work for the federal gov’t in EPA, and I just learned that President Obama has ordered that fed gov’t must reduce its energy use by 28% by 2020. Great. Then we found out that of all the energy used for offices, labs, Army, etc. 60% is used for mobility needs other than fleet vehicles. 70% of that 60% is jet fuel. So, the biggest thing we could do to reduce gov’t energy use is to either fly our jets less or install more efficient jet engines in the fuel tanker airplanes, which are the least efficient. Interesting. It makes my efforts to turn out the lights in other people’s offices at the end of the day in perspective.