Actor Scott McNairy talks about starring in season 2 of Narcos: Mexico as a DEA agent who heads an "off-the-books" operation to avenge the death of a fellow agent and take down a ruthless drug lord.  He recalls growing up in Texas, coping with dyslexia as a kid, and his early ambition to be a wildlife cinematographer.  He discusses how he prepares for a role and how most of his characters are drawn from a personal friend or acquaintance.  He discusses spending time with real DEA agents for Narcos: Mexico, goes into the history of the Mexican narcotics cartels, and speaks frankly about the endless war on drugs. Watch Season 2 of Narcos: Mexico now streaming on Netflix.  Today's episode was sponsored by Wave.