Emergency management personnel assigned to the 28th Civil Engineer Squadron host an annual Prepare-A-Thon inside The Base at Ellsworth Air Force Base, S.D., April 26, 2017. The Prepare-A-Thon is a program initiated throughout the nation and is especially designed for to teach people how to be prepared for natural disasters or unexpected emergencies. (U.S. Air Force photo by Airman Nicolas Z. Erwin)