Children from a number of Black Hills area schools learn how to protect their environment from Aaron Fielder, 28th Civil Engineer Squadron Resource Efficiency manager, during an Earth Day presentation at the South Dakota Air and Space Museum in Box Elder, S.D., May 1, 2013. The focus of the event was to increase awareness and support for environmental protection and water conservation. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)