staggering influx of fentanyl, responding to overdoses and administering narcan, now a regular part of their job. sergeant jason busher leads the department s drug enforcement bureau. the biggest challenge is the quantity of fentanyl pills out on the street sergeant busher says not only are the drugs increasing, but the amount of people addicted to fentanyl is overwhelming. right now the probably the worst drug dependency over anything i ve seen. we visited phoenix s pd science lab where forensic scientists test evidence these pills all confirm to contain fentanyl. landon was 25 he was getting his mechanical engineering degree. arizona state senator and teacher christine marsh lost her son last year. she believes he took a