U.S. Air Force Senior Airman Erik Barrera, 52nd Security Forces Squadron military working dog handler, and Ccatilina, an MWD, conduct detection training at Spangdahlem Air Base, Germany, Aug. 1, 2019. Handlers and MWDs learn to communicate with each other to understand when drugs or explosives are present. (U.S. Air Force photo by Airman 1st Class Valerie Seelye)

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Photo by: Airman 1st Class Valerie Seelye |  VIRIN: 190801-F-ON660-0072.JPG