Members from the 28th Security Forces Squadron participate in a military working dog demonstration at Ellsworth Air Force Base, S.D., May 8, 2015. As a way to thank Ellsworth spouses for their hard work, commitment and unwavering dedication, the base hosted the annual event, providing attendees the opportunity to learn more about the Air Force mission and what their spouses do each day. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/Released)