Aaron Sprouse and Mohammad Alikhani share energy conservation tips with Rena Hawk at the base exchange on Joint Base Andrews, Md., April 23, 2014. In honor of Earth Day, Sprouse, the pollution prevention program manager, and Alikhani, the energy manager for the 11th Civil Engineer Squadron, educated JBA members on base environmental programs. JBA has reduced its energy intensity 55% from 2003-2013, said Alikhani. (U.S. Air Force photo/ Senior Airman Nesha Humes)