U.S. Air Force Senior Airman Erik Barrera, 52nd Security Forces Squadron military working dog handler, prepares Dirk, 52nd SFS MWD, for an obstacle course during the Annual Awards Nominee tour at Spangdahlem Air Base, Germany, Feb. 1, 2018. During the base tour for the award nominees, military working dog trainers showed off the skills of their military working dogs with various skill challenges. (U.S. Air Force photo by Airman 1st Class Jovante Johnson)