Nava’s sentence underscores the seriousness with which federal authorities are treating large-scale drug trafficking offenses. When officers executed a state search warrant, Nava was present and told police she did not know what her co-defendant had stored in the apartment. This discovery marked the first concrete evidence linking Nava to the drug trafficking operation. The investigation was conducted by the Drug Enforcement Administration along with the Billings Police Department. Get our free mobile appFederal officials say the sentence reflects the scale of the drug trafficking involved and the coordination of distribution across multiple locations in the city.