OPP Cst. Chris Halverson, accompanied by his German Shepherd partner, “Diesel,” spoke to youth and staff at the United Native Friendship Centre here this morning. Cst. Halverson explained how he works with “Diesel” and a second dog, “Sophie,” who sniff out drugs, people, guns, and explosives during police investigations in the region. He was one of several speaker on hand for National Addictions Awareness Week.