Jay Dobyns was a special agent for the Bureau of Alcohol, Tobacco, Firearms and Explosives. In 2002, he infiltrated the Hells Angels biker gang and spent two years undercover—a period in which he says he worried every single day about getting exposed and killed by the group.   Check out I Spy's merch by going to https://store.dftba.com/collections/i-spy Save 15% on FP subscriptions. Visit https://foreignpolicy.com/subscribe/ and enter code ISPY at checkout to claim this offer.