Royal Canadian Air Cadets from the 342nd Bedford Lions Squadron watch a U.S. military working dog demonstration at the 633rd Security Force Squadron during a tour of Langley Air Force Base, Va., March 12, 2014. The 342nd Bedford Lions Squadron cadets visited the 633rd Logistics Readiness Squadron, 633rd Security Forces Squadron, Shellbank Fitness Center and finished the visit with a meal at the Crossbow dining facility. (U.S. Air Force photo by Airman 1st Class R. Alex Durbin/Released)