terry yonkers, the assistant secretary of the air force for environment and logistics, thomas hicks, the deputy secretary of the navy for energy and dorothy robien, the undersecretary of defense for the environment. ladies and gentlemen, welcome to the show. >> thank you. >> thank you. >> dorothy, i'd like to start with you. for generations -- and then have all of you guys take a crack at the same question. for generations the u.s. has looked at the energy as a limitless limitless commodity. general martin dempsey said that has to change, there is an imperative greater need for the fuel and martin dempsey hosted an energy roundtable where you guys all participated to focus the department's attention on this issue. what are some of the concrete steps that have been taken over the past couple of years to change the energy and how the department thinks about energy? >> i think the first thing has been a recognition that it is critical to our ability to fight wars effectively, to be more energy efficient, so the change in the culture has been fundamental and that's really, i think, been