Scott Landguth, Ellsworth Development Authority executive director, explains the water treatment process during a tour of the Box Elder Regional Wastewater Treatment Facility in Box Elder, S.D., Sept. 11, 2014. Guests observed the capabilities of the newly constructed facility serving Box Elder and Ellsworth communities prior to a ceremony marking the completion of the plant. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)