In an effort to enhance American security and address climate change, the U.S. military is diminishing its footprint. The military is producing cleaner power, reducing energy consumption, managing water and minimizing waste. Their efforts encompass vast numbers of vehicles, ships, planes, buildings, lands, and other facilities. A major impetus for these efforts is Executive Order 13514, “Federal Leadership in Environmental, Energy, and Economic Performance,” which President Obama signed on October 5, 2009. It mandates a 30 percent reduction in energy usage by federal agencies.