A teenager facing more than a dozen felony charges for allegedly trafficking guns and drugs pleaded not guilty Monday in a Downtown San Diego courthouse. Last week, San Diego police and DEA agents arrested Harrison Stone, 18. Officers said they found several silencers and illegal assault weapons at two addresses. SDPD said the arrest capped a one-month investigation into the trafficking of narcotics and illegal firearms. MORE: https://www.cbs8.com/article/news/local/san-diego-teen-pleads-not-guilty-to-possession-of-guns-lsd-ecstasy/509-e7805724-258f-4584-b9c7-49acc61c19b0