Senior Airman Jason Soliz, a 100th Security Forces Squadron Military Working Dog Unit handler, and MWD Gina, conduct a sweep of the passenger terminal on Royal Air Force Mildenhall, England, June 16, 2015. Members of the 100th SFS and Central Region U.K. Border Force conducted sweeps of the building with their working dogs to strengthen detection methods and learn potential training techniques. (U.S. Air Force photo/Senior Airman Christine Halan)